Hi,

PFA patch to fix the PEP-8 issues,

To verify changes goto '../web' directory and run,
pycodestyle --config=.pycodestyle ./regression/
pycodestyle --config=.pycodestyle ./pgadmin/setup/
pycodestyle --config=.pycodestyle ./pgadmin/settings/
pycodestyle --config=.pycodestyle ./pgadmin/redirects/
pycodestyle --config=.pycodestyle ./pgadmin/preferences/
pycodestyle --config=.pycodestyle ./pgadmin/model/
pycodestyle --config=.pycodestyle ./pgadmin/help/


--
Regards,
Murtuza Zabuawala
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
diff --git a/web/pgadmin/help/__init__.py b/web/pgadmin/help/__init__.py
index ddfb368..016793d 100644
--- a/web/pgadmin/help/__init__.py
+++ b/web/pgadmin/help/__init__.py
@@ -15,14 +15,13 @@ from flask_babel import gettext
 from pgadmin.utils import PgAdminModule
 from pgadmin.utils.menu import MenuItem, Panel
 from pgadmin.utils.preferences import Preferences
-
 import config
 
 
 class HelpModule(PgAdminModule):
     def get_own_menuitems(self):
-        """Return a (set) of dicts of help menu items, with name, priority, 
URL,
-        target and onclick code."""
+        """Return a (set) of dicts of help menu items, with name, priority,
+        URL, target and onclick code."""
         return {'help_items': [
             MenuItem(name='mnu_online_help',
                      label=gettext('Online Help'),
@@ -75,7 +74,9 @@ class HelpModule(PgAdminModule):
             'https://www.postgresql.org/docs/$VERSION$/static/',
             category_label=gettext('Help'),
             help_str=gettext(
-                'Path to the PostgreSQL documentation. $VERSION$ will be 
replaced with the major.minor version number.')
+                'Path to the PostgreSQL documentation. $VERSION$ will be '
+                'replaced with the major.minor version number.'
+            )
         )
 
         self.edbas_help_path = self.help_preference.register(
@@ -84,7 +85,9 @@ class HelpModule(PgAdminModule):
             'https://www.enterprisedb.com/docs/en/$VERSION$/pg/',
             category_label=gettext('Help'),
             help_str=gettext(
-                'Path to the EDB Advanced Server documentation. $VERSION$ will 
be replaced with the major.minor version number.')
+                'Path to the EDB Advanced Server documentation. $VERSION$ '
+                'will be replaced with the major.minor version number.'
+            )
         )
 
     def get_exposed_url_endpoints(self):
@@ -95,5 +98,8 @@ class HelpModule(PgAdminModule):
 
 
 # Initialise the module
-blueprint = HelpModule(MODULE_NAME, __name__, static_url_path='/help',
-                       static_folder=config.HELP_PATH)
+blueprint = HelpModule(
+    MODULE_NAME, __name__,
+    static_url_path='/help',
+    static_folder=config.HELP_PATH
+)
diff --git a/web/pgadmin/model/__init__.py b/web/pgadmin/model/__init__.py
index 655d3f1..674f945 100644
--- a/web/pgadmin/model/__init__.py
+++ b/web/pgadmin/model/__init__.py
@@ -120,24 +120,28 @@ class Server(db.Model):
     ssl_mode = db.Column(
         db.String(16),
         db.CheckConstraint(
-            "ssl_mode IN ('allow', 'prefer', 'require', 'disable', 
'verify-ca', 'verify-full')"
+            "ssl_mode IN ('allow', 'prefer', 'require', 'disable', "
+            "'verify-ca', 'verify-full')"
         ),
         nullable=False)
     comment = db.Column(db.String(1024), nullable=True)
     discovery_id = db.Column(db.String(128), nullable=True)
-    servers = db.relationship('ServerGroup',
-                           backref=db.backref('server', cascade="all, 
delete-orphan"),
-                           lazy='joined')
+    servers = db.relationship(
+        'ServerGroup',
+        backref=db.backref('server', cascade="all, delete-orphan"),
+        lazy='joined'
+    )
     db_res = db.Column(db.Text(), nullable=True)
     passfile = db.Column(db.Text(), nullable=True)
     sslcert = db.Column(db.Text(), nullable=True)
     sslkey = db.Column(db.Text(), nullable=True)
     sslrootcert = db.Column(db.Text(), nullable=True)
     sslcrl = db.Column(db.Text(), nullable=True)
-    sslcompression =db.Column(db.Integer(),
-                              db.CheckConstraint(
-                                  'sslcompression >= 0 AND sslcompression <= 1'
-                              ), nullable=False)
+    sslcompression = db.Column(
+        db.Integer(),
+        db.CheckConstraint('sslcompression >= 0 AND sslcompression <= 1'),
+        nullable=False
+    )
     bgcolor = db.Column(db.Text(10), nullable=True)
     fgcolor = db.Column(db.Text(10), nullable=True)
 
@@ -193,15 +197,25 @@ class DebuggerFunctionArguments(db.Model):
     schema_id = db.Column(db.Integer(), nullable=False, primary_key=True)
     function_id = db.Column(db.Integer(), nullable=False, primary_key=True)
     arg_id = db.Column(db.Integer(), nullable=False, primary_key=True)
-    is_null = db.Column(db.Integer(),
-                        db.CheckConstraint('is_null >= 0 AND is_null <= 1'),
-                        nullable=False)
-    is_expression = db.Column(db.Integer(),
-                              db.CheckConstraint('is_expression >= 0 AND 
is_expression <= 1'),
-                              nullable=False)
-    use_default = db.Column(db.Integer(),
-                            db.CheckConstraint('use_default >= 0 AND 
use_default <= 1'),
-                            nullable=False)
+    is_null = db.Column(
+        db.Integer(),
+        db.CheckConstraint('is_null >= 0 AND is_null <= 1'),
+        nullable=False
+    )
+    is_expression = db.Column(
+        db.Integer(),
+        db.CheckConstraint(
+            'is_expression >= 0 AND is_expression <= 1'
+        ),
+        nullable=False
+    )
+    use_default = db.Column(
+        db.Integer(),
+        db.CheckConstraint(
+            'use_default >= 0 AND use_default <= 1'
+        ),
+        nullable=False
+    )
 
     value = db.Column(db.String(), nullable=True)
 
diff --git a/web/pgadmin/preferences/__init__.py 
b/web/pgadmin/preferences/__init__.py
index 3f73376..f1f571c 100644
--- a/web/pgadmin/preferences/__init__.py
+++ b/web/pgadmin/preferences/__init__.py
@@ -60,7 +60,11 @@ class PreferencesModule(PgAdminModule):
         Returns:
             list: a list of url endpoints exposed to the client.
         """
-        return ['preferences.index', 'preferences.get_by_name', 
'preferences.get_all']
+        return [
+            'preferences.index',
+            'preferences.get_by_name',
+            'preferences.get_all'
+        ]
 
 
 blueprint = PreferencesModule(MODULE_NAME, __name__)
@@ -70,9 +74,11 @@ blueprint = PreferencesModule(MODULE_NAME, __name__)
 @login_required
 def script():
     """render the required javascript"""
-    return Response(response=render_template("preferences/preferences.js", 
_=gettext),
-                    status=200,
-                    mimetype="application/javascript")
+    return Response(
+        response=render_template("preferences/preferences.js", _=gettext),
+        status=200,
+        mimetype="application/javascript"
+    )
 
 
 @blueprint.route("/", methods=["GET"], endpoint='index')
@@ -171,7 +177,8 @@ def save(pid):
     """
     data = request.form if request.form else json.loads(request.data.decode())
 
-    res, msg = Preferences.save(data['mid'], data['category_id'], data['id'], 
data['value'])
+    res, msg = Preferences.save(
+        data['mid'], data['category_id'], data['id'], data['value'])
 
     if not res:
         return internal_server_error(errormsg=msg)
@@ -195,4 +202,3 @@ def save(pid):
     response.set_cookie("PGADMIN_LANGUAGE", language)
 
     return response
-
diff --git a/web/pgadmin/redirects/__init__.py 
b/web/pgadmin/redirects/__init__.py
index 2080380..7f0c7c6 100644
--- a/web/pgadmin/redirects/__init__.py
+++ b/web/pgadmin/redirects/__init__.py
@@ -14,8 +14,9 @@ from pgadmin import PgAdminModule
 
 MODULE_NAME = 'redirects'
 
-blueprint = PgAdminModule(MODULE_NAME, __name__,
-                          url_prefix='/')
+blueprint = PgAdminModule(
+    MODULE_NAME, __name__, url_prefix='/'
+)
 
 
 @blueprint.route('/')
diff --git a/web/pgadmin/settings/__init__.py b/web/pgadmin/settings/__init__.py
index f62e0d9..a2a84c6 100644
--- a/web/pgadmin/settings/__init__.py
+++ b/web/pgadmin/settings/__init__.py
@@ -35,12 +35,14 @@ class SettingsModule(PgAdminModule):
     def get_own_menuitems(self):
         return {
             'file_items': [
-                MenuItem(name='mnu_resetlayout',
-                         priority=999,
-                         module="pgAdmin.Settings",
-                         callback='show',
-                         icon='fa fa-retweet',
-                         label=gettext('Reset Layout'))
+                MenuItem(
+                    name='mnu_resetlayout',
+                    priority=999,
+                    module="pgAdmin.Settings",
+                    callback='show',
+                    icon='fa fa-retweet',
+                    label=gettext('Reset Layout')
+                )
             ]
         }
 
@@ -49,7 +51,9 @@ class SettingsModule(PgAdminModule):
         Returns:
             list: a list of url endpoints exposed to the client.
         """
-        return ['settings.store', 'settings.store_bulk', 
'settings.reset_layout']
+        return [
+            'settings.store', 'settings.store_bulk', 'settings.reset_layout'
+        ]
 
 
 blueprint = SettingsModule(MODULE_NAME, __name__)
@@ -66,7 +70,8 @@ def store_setting(setting, value):
 def get_setting(setting, default=None):
     """Retrieve a configuration setting for the current user, or return the
     default value specified by the caller."""
-    data = Setting.query.filter_by(user_id=current_user.id, 
setting=setting).first()
+    data = Setting.query.filter_by(
+        user_id=current_user.id, setting=setting).first()
 
     if not data or data.value is None:
         return default
@@ -102,7 +107,8 @@ def store(setting=None, value=None):
         if request.method == 'POST':
             if 'count' in request.form:
                 for x in range(int(request.form['count'])):
-                    store_setting(request.form['setting%d' % (x + 1)], 
request.form['value%d' % (x + 1)])
+                    store_setting(request.form['setting%d' % (
+                        x + 1)], request.form['value%d' % (x + 1)])
             else:
                 store_setting(request.form['setting'], request.form['value'])
         else:
diff --git a/web/pgadmin/setup/db_upgrade.py b/web/pgadmin/setup/db_upgrade.py
index 4fe8c3b..a3d5d3d 100644
--- a/web/pgadmin/setup/db_upgrade.py
+++ b/web/pgadmin/setup/db_upgrade.py
@@ -18,8 +18,8 @@ def db_upgrade(app):
     with app.app_context():
         flask_migrate.Migrate(app, db)
         migration_folder = os.path.join(
-                os.path.dirname(os.path.realpath(u(__file__, fs_encoding))),
-                os.pardir, os.pardir,
-                u'migrations'
-            )
+            os.path.dirname(os.path.realpath(u(__file__, fs_encoding))),
+            os.pardir, os.pardir,
+            u'migrations'
+        )
         flask_migrate.upgrade(migration_folder)
diff --git a/web/pgadmin/setup/user_info.py b/web/pgadmin/setup/user_info.py
index 49865cc..86c10b7 100644
--- a/web/pgadmin/setup/user_info.py
+++ b/web/pgadmin/setup/user_info.py
@@ -37,7 +37,7 @@ def user_info():
             email = ''
             p1 = ''
             if os.environ['PGADMIN_SETUP_EMAIL'] and os.environ[
-                'PGADMIN_SETUP_PASSWORD']:
+                    'PGADMIN_SETUP_PASSWORD']:
                 email = os.environ['PGADMIN_SETUP_EMAIL']
                 p1 = os.environ['PGADMIN_SETUP_PASSWORD']
         else:
@@ -66,7 +66,8 @@ def user_info():
                     print(u'Passwords do not match. Please try again.')
                 else:
                     print(
-                        u'Password must be at least 6 characters. Please try 
again.'
+                        u'Password must be at least 6 characters. '
+                        u'Please try again.'
                     )
                 p1, p2 = pprompt()
     return email, p1
diff --git a/web/regression/feature_utils/app_starter.py 
b/web/regression/feature_utils/app_starter.py
index 894d1f9..77b0400 100644
--- a/web/regression/feature_utils/app_starter.py
+++ b/web/regression/feature_utils/app_starter.py
@@ -13,6 +13,7 @@ import random
 
 import time
 
+
 class AppStarter:
     """ Helper for starting the full pgadmin4 app and loading the page via
     selenium
@@ -43,7 +44,8 @@ class AppStarter:
         self.driver.set_window_size(1280, 1024)
         self.driver.get(
             "http://"; + self.app_config.DEFAULT_SERVER + ":" +
-            random_server_port)
+            random_server_port
+        )
 
     def stop_app(self):
         """ This function stop the started app by killing process """
diff --git a/web/regression/feature_utils/base_feature_test.py 
b/web/regression/feature_utils/base_feature_test.py
index c341e95..568fc2e 100644
--- a/web/regression/feature_utils/base_feature_test.py
+++ b/web/regression/feature_utils/base_feature_test.py
@@ -27,8 +27,11 @@ class BaseFeatureTest(BaseTestGenerator):
         self.server = deepcopy(self.server)
         self.server['name'] += ' Feature Tests'
         if app_config.SERVER_MODE:
-            self.skipTest("Currently, config is set to start pgadmin in server 
mode. "
-                          "This test doesn't know username and password so 
doesn't work in server mode")
+            self.skipTest(
+                "Currently, config is set to start pgadmin in server mode. "
+                "This test doesn't know username and password so doesn't work "
+                "in server mode"
+            )
 
         self.page = PgadminPage(self.driver, app_config)
         try:
@@ -38,7 +41,7 @@ class BaseFeatureTest(BaseTestGenerator):
             self.page.reset_layout()
             self.page.wait_for_spinner_to_disappear()
             self.before()
-        except:
+        except Exception:
             self._screenshot()
             raise
 
@@ -52,7 +55,8 @@ class BaseFeatureTest(BaseTestGenerator):
         pass
 
     def tearDown(self):
-        python2_failures = hasattr(self, "_resultForDoCleanups") and 
self.current_test_failed()
+        python2_failures = hasattr(
+            self, "_resultForDoCleanups") and self.current_test_failed()
 
         python3_failures = hasattr(self, '_outcome') and self.any_step_failed()
 
@@ -68,7 +72,8 @@ class BaseFeatureTest(BaseTestGenerator):
         return False
 
     def current_test_failed(self):
-        all_failures = self._resultForDoCleanups.errors + 
self._resultForDoCleanups.failures
+        all_failures = self._resultForDoCleanups.errors + \
+            self._resultForDoCleanups.failures
         for failure in all_failures:
             if failure[0] == self:
                 return True
@@ -76,8 +81,10 @@ class BaseFeatureTest(BaseTestGenerator):
 
     def _screenshot(self):
         screenshots_directory = '{0}/../screenshots'.format(self.CURRENT_PATH)
-        screenshots_server_directory = '{0}/{1}'.format(screenshots_directory,
-                                                        
self.server["name"].replace(" ", "_"))
+        screenshots_server_directory = '{0}/{1}'.format(
+            screenshots_directory,
+            self.server["name"].replace(" ", "_")
+        )
 
         self.ensure_directory_exists(screenshots_directory)
         self.ensure_directory_exists(screenshots_server_directory)
@@ -86,10 +93,13 @@ class BaseFeatureTest(BaseTestGenerator):
         python_version = sys.version.split(" ")[0]
 
         self.page.driver.save_screenshot(
-            '{0}/{1}-{2}-Python-{3}.png'.format(screenshots_server_directory,
-                                                self.__class__.__name__,
-                                                date,
-                                                python_version))
+            '{0}/{1}-{2}-Python-{3}.png'.format(
+                screenshots_server_directory,
+                self.__class__.__name__,
+                date,
+                python_version
+            )
+        )
 
     def ensure_directory_exists(self, path):
         try:
diff --git a/web/regression/feature_utils/pgadmin_page.py 
b/web/regression/feature_utils/pgadmin_page.py
index aafae5c..10ffa1d 100644
--- a/web/regression/feature_utils/pgadmin_page.py
+++ b/web/regression/feature_utils/pgadmin_page.py
@@ -37,14 +37,17 @@ class PgadminPage:
 
     def click_modal(self, button_text):
         time.sleep(0.5)
-        # Find active alertify dialog in case of multiple alertify dialog & 
click on that dialog
+        # Find active alertify dialog in case of multiple alertify dialog
+        # & click on that dialog
         modal_button = self.find_by_xpath(
-            "//div[contains(@class, 'alertify') and not(contains(@class, 
'ajs-hidden'))]//button[.='%s']"
+            "//div[contains(@class, 'alertify') and "
+            "not(contains(@class, 'ajs-hidden'))]//button[.='%s']"
             % button_text)
         self.click_element(modal_button)
 
     def add_server(self, server_config):
-        self.find_by_xpath("//*[@class='aciTreeText' and 
contains(.,'Servers')]").click()
+        self.find_by_xpath(
+            "//*[@class='aciTreeText' and contains(.,'Servers')]").click()
         self.driver.find_element_by_link_text("Object").click()
         ActionChains(self.driver) \
             .move_to_element(self.driver.find_element_by_link_text("Create")) \
@@ -59,7 +62,8 @@ class PgadminPage:
         self.fill_input_by_field_name("password", server_config['db_password'])
         self.find_by_xpath("//button[contains(.,'Save')]").click()
 
-        self.find_by_xpath("//*[@id='tree']//*[.='" + server_config['name'] + 
"']")
+        self.find_by_xpath(
+            "//*[@id='tree']//*[.='" + server_config['name'] + "']")
 
     def open_query_tool(self):
         self.driver.find_element_by_link_text("Tools").click()
@@ -73,7 +77,6 @@ class PgadminPage:
         self.find_by_partial_link_text("Query Tool").click()
         self.click_tab('Query -')
 
-
     def enable_menu_item(self, menu_item, wait_time):
         start_time = time.time()
         # wait until menu becomes enabled.
@@ -91,12 +94,19 @@ class PgadminPage:
 
     def close_query_tool(self):
         self.driver.switch_to.default_content()
-        tab = self.find_by_xpath("//*[contains(@class,'wcPanelTab') and 
contains(.,'" + "Query" + "')]")
+        tab = self.find_by_xpath(
+            "//*[contains(@class,'wcPanelTab') and "
+            "contains(.,'" + "Query" + "')]")
         ActionChains(self.driver).context_click(tab).perform()
-        self.find_by_xpath("//li[contains(@class, 
'context-menu-item')]/span[contains(text(), 'Remove Panel')]").click()
-        
self.driver.switch_to.frame(self.driver.find_elements_by_tag_name("iframe")[0])
+        self.find_by_xpath(
+            "//li[contains(@class, 'context-menu-item')]/span[contains(text(),"
+            " 'Remove Panel')]").click()
+        self.driver.switch_to.frame(
+            self.driver.find_elements_by_tag_name("iframe")[0])
         time.sleep(.5)
-        self.click_element(self.find_by_xpath('//button[contains(@class, 
"ajs-button") and contains(.,"Don\'t save")]'))
+        self.click_element(self.find_by_xpath(
+            '//button[contains(@class, "ajs-button") and '
+            'contains(.,"Don\'t save")]'))
         self.driver.switch_to.default_content()
 
     def close_data_grid(self):
@@ -106,7 +116,9 @@ class PgadminPage:
 
     def remove_server(self, server_config):
         self.driver.switch_to.default_content()
-        server_to_remove = self.find_by_xpath("//*[@id='tree']//*[.='" + 
server_config['name'] + "' and @class='aciTreeItem']")
+        server_to_remove = self.find_by_xpath(
+            "//*[@id='tree']//*[.='" + server_config['name'] +
+            "' and @class='aciTreeItem']")
         self.click_element(server_to_remove)
         object_menu_item = self.find_by_partial_link_text("Object")
         self.click_element(object_menu_item)
@@ -115,10 +127,14 @@ class PgadminPage:
         self.click_modal('OK')
 
     def select_tree_item(self, tree_item_text):
-        self.find_by_xpath("//*[@id='tree']//*[.='" + tree_item_text + "' and 
@class='aciTreeItem']").click()
+        self.find_by_xpath(
+            "//*[@id='tree']//*[.='" + tree_item_text +
+            "' and @class='aciTreeItem']").click()
 
     def toggle_open_tree_item(self, tree_item_text):
-        self.find_by_xpath("//*[@id='tree']//*[.='" + tree_item_text + 
"']/../*[@class='aciTreeButton']").click()
+        self.find_by_xpath(
+            "//*[@id='tree']//*[.='" + tree_item_text +
+            "']/../*[@class='aciTreeButton']").click()
 
     def toggle_open_server(self, tree_item_text):
         def check_for_password_dialog_or_tree_open(driver):
@@ -128,14 +144,17 @@ class PgadminPage:
                 dialog = None
 
             try:
-                database_node = 
driver.find_element_by_xpath("//*[@id='tree']//*[.='Databases']/../*[@class='aciTreeButton']")
+                database_node = driver.find_element_by_xpath(
+                    "//*[@id='tree']//*[.='Databases']"
+                    "/../*[@class='aciTreeButton']")
             except WebDriverException:
                 database_node = None
 
             return dialog is not None or database_node is not None
 
         self.toggle_open_tree_item(tree_item_text)
-        self._wait_for("Waiting for password dialog or tree to open", 
check_for_password_dialog_or_tree_open)
+        self._wait_for("Waiting for password dialog or tree to open",
+                       check_for_password_dialog_or_tree_open)
 
         try:
             self.driver.find_element_by_id("frmPassword")
@@ -145,13 +164,19 @@ class PgadminPage:
             return
 
     def find_by_xpath(self, xpath):
-        return self.wait_for_element(lambda driver: 
driver.find_element_by_xpath(xpath))
+        return self.wait_for_element(
+            lambda driver: driver.find_element_by_xpath(xpath)
+        )
 
     def find_by_id(self, element_id):
-        return self.wait_for_element(lambda driver: 
driver.find_element_by_id(element_id))
+        return self.wait_for_element(
+            lambda driver: driver.find_element_by_id(element_id)
+        )
 
     def find_by_css_selector(self, css_selector):
-        return self.wait_for_element(lambda driver: 
driver.find_element_by_css_selector(css_selector))
+        return self.wait_for_element(
+            lambda driver: driver.find_element_by_css_selector(css_selector)
+        )
 
     def find_by_partial_link_text(self, link_text):
         return self._wait_for(
@@ -160,7 +185,8 @@ class PgadminPage:
         )
 
     def click_element(self, element):
-        # driver must be here to adhere to the method contract in 
selenium.webdriver.support.wait.WebDriverWait.until()
+        # driver must be here to adhere to the method contract in
+        # selenium.webdriver.support.wait.WebDriverWait.until()
         def click_succeeded(driver):
             try:
                 element.click()
@@ -168,7 +194,9 @@ class PgadminPage:
             except WebDriverException:
                 return False
 
-        return self._wait_for("clicking the element not to throw an 
exception", click_succeeded)
+        return self._wait_for(
+            "clicking the element not to throw an exception", click_succeeded
+        )
 
     def fill_input_by_field_name(self, field_name, field_content):
         field = self.find_by_xpath("//input[@name='" + field_name + "']")
@@ -183,9 +211,11 @@ class PgadminPage:
         def find_codemirror(driver):
             try:
                 driver.switch_to.default_content()
-                
driver.switch_to_frame(driver.find_element_by_tag_name("iframe"))
+                driver.switch_to_frame(
+                    driver.find_element_by_tag_name("iframe"))
                 element = driver.find_element_by_xpath(
-                    
"//pre[contains(@class,'CodeMirror-line')]/../../../*[contains(@class,'CodeMirror-code')]")
+                    "//pre[contains(@class,'CodeMirror-line')]/../../../"
+                    "*[contains(@class,'CodeMirror-code')]")
                 if element.is_displayed() and element.is_enabled():
                     return element
             except (NoSuchElementException, WebDriverException):
@@ -193,8 +223,8 @@ class PgadminPage:
 
         time.sleep(1)
         WebDriverWait(self.driver, timeout=self.timeout, poll_frequency=0.01).\
-            until(find_codemirror, "Timed out waiting for codemirror to 
appear").\
-            click()
+            until(find_codemirror, "Timed out waiting for codemirror "
+                                   "to appear").click()
         time.sleep(1)
 
         action = ActionChains(self.driver)
@@ -202,8 +232,9 @@ class PgadminPage:
         action.perform()
 
     def click_tab(self, tab_name):
-        tab = 
self.find_by_xpath("//*[contains(@class,'wcTabTop')]//*[contains(@class,'wcPanelTab')
 "
-                           "and contains(.,'" + tab_name + "')]")
+        tab = self.find_by_xpath("//*[contains(@class,'wcTabTop')]//"
+                                 "*[contains(@class,'wcPanelTab') "
+                                 "and contains(.,'" + tab_name + "')]")
         self.click_element(tab)
 
     def wait_for_input_field_content(self, field_name, content):
@@ -213,7 +244,9 @@ class PgadminPage:
 
             return str(content) == element.get_attribute('value')
 
-        return self._wait_for("field to contain '" + str(content) + "'", 
input_field_has_content)
+        return self._wait_for(
+            "field to contain '" + str(content) + "'", input_field_has_content
+        )
 
     def wait_for_element(self, find_method_with_args):
         def element_if_it_exists(driver):
@@ -247,7 +280,8 @@ class PgadminPage:
             except NoSuchElementException:
                 return True
 
-        self._wait_for("reloading indicator to disappear", 
reloading_indicator_has_disappeared)
+        self._wait_for("reloading indicator to disappear",
+                       reloading_indicator_has_disappeared)
 
     def wait_for_spinner_to_disappear(self):
         def spinner_has_disappeared(driver):
@@ -283,8 +317,11 @@ class PgadminPage:
 
         self._wait_for("app to start", page_shows_app, self.app_start_timeout)
 
-    def _wait_for(self, waiting_for_message, condition_met_function, timeout = 
None):
+    def _wait_for(self, waiting_for_message, condition_met_function,
+                  timeout=None):
         if timeout is None:
             timeout = self.timeout
-        return WebDriverWait(self.driver, timeout, 
0.01).until(condition_met_function,
-                                                                    "Timed out 
waiting for " + waiting_for_message)
+        return WebDriverWait(self.driver, timeout, 0.01).until(
+            condition_met_function,
+            "Timed out waiting for " + waiting_for_message
+        )
diff --git a/web/regression/python_test_utils/template_helper.py 
b/web/regression/python_test_utils/template_helper.py
index 1ff3316..d25474d 100644
--- a/web/regression/python_test_utils/template_helper.py
+++ b/web/regression/python_test_utils/template_helper.py
@@ -12,7 +12,9 @@ from jinja2 import Environment
 
 
 class SimpleTemplateLoader(BaseLoader):
-    """ This class pretends to load whatever file content it is initialized 
with"""
+    """ This class pretends to load whatever file content it is initialized
+    with"""
+
     def __init__(self, file_content):
         self.file_content = file_content
 
diff --git a/web/regression/python_test_utils/test_utils.py 
b/web/regression/python_test_utils/test_utils.py
index b934e90..c11853f 100644
--- a/web/regression/python_test_utils/test_utils.py
+++ b/web/regression/python_test_utils/test_utils.py
@@ -75,17 +75,19 @@ def get_config_data():
     """This function reads the server data from config_data"""
     server_data = []
     for srv in test_setup.config_data['server_credentials']:
-        if (not 'enabled' in srv) or srv['enabled']:
-            data = {"name": srv['name'],
-                    "comment": srv['comment'],
-                    "host": srv['host'],
-                    "port": srv['db_port'],
-                    "db": srv['maintenance_db'],
-                    "username": srv['db_username'],
-                    "db_password": srv['db_password'],
-                    "role": "",
-                    "sslmode": srv['sslmode'],
-                    "tablespace_path": srv.get('tablespace_path', None)}
+        if 'enabled' not in srv or srv['enabled']:
+            data = {
+                "name": srv['name'],
+                "comment": srv['comment'],
+                "host": srv['host'],
+                "port": srv['db_port'],
+                "db": srv['maintenance_db'],
+                "username": srv['db_username'],
+                "db_password": srv['db_password'],
+                "role": "",
+                "sslmode": srv['sslmode'],
+                "tablespace_path": srv.get('tablespace_path', None)
+            }
             server_data.append(data)
     return server_data
 
@@ -115,12 +117,14 @@ def clear_node_info_dict():
 def create_database(server, db_name):
     """This function used to create database and returns the database id"""
     try:
-        connection = get_db_connection(server['db'],
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            server['db'],
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -154,24 +158,29 @@ def create_table(server, db_name, table_name):
     :return: None
     """
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
         pg_cursor.execute(
-            '''CREATE TABLE "%s" (some_column VARCHAR, value NUMERIC, details 
VARCHAR)''' %
-            table_name)
+            '''CREATE TABLE "%s" (some_column VARCHAR, value NUMERIC,
+            details VARCHAR)''' % table_name)
         pg_cursor.execute(
-            '''INSERT INTO "%s" VALUES ('Some-Name', 6, 'some info')''' % 
table_name)
+            '''INSERT INTO "%s" VALUES ('Some-Name', 6, 'some info')'''
+            % table_name)
         pg_cursor.execute(
-            '''INSERT INTO "%s" VALUES ('Some-Other-Name', 22, 'some other 
info')''' % table_name)
+            '''INSERT INTO "%s" VALUES ('Some-Other-Name', 22,
+            'some other info')''' % table_name)
         pg_cursor.execute(
-            '''INSERT INTO "%s" VALUES ('Yet-Another-Name', 14, 'cool 
info')''' % table_name)
+            '''INSERT INTO "%s" VALUES ('Yet-Another-Name', 14,
+            'cool info')''' % table_name)
 
         connection.set_isolation_level(old_isolation_level)
         connection.commit()
@@ -192,12 +201,14 @@ def create_table_with_query(server, db_name, query):
     :return: None
     """
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -213,12 +224,14 @@ def create_constraint(
         server, db_name, table_name,
         constraint_type="unique", constraint_name="test_unique"):
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -237,12 +250,14 @@ def create_constraint(
 
 def create_debug_function(server, db_name, function_name="test_func"):
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -271,12 +286,14 @@ def create_debug_function(server, db_name, 
function_name="test_func"):
 
 def drop_debug_function(server, db_name, function_name="test_func"):
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -293,12 +310,14 @@ def drop_debug_function(server, db_name, 
function_name="test_func"):
 
 def create_role(server, db_name, role_name="test_role"):
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -325,12 +344,14 @@ def create_role(server, db_name, role_name="test_role"):
 
 def drop_role(server, db_name, role_name="test_role"):
     try:
-        connection = get_db_connection(db_name,
-                                       server['username'],
-                                       server['db_password'],
-                                       server['host'],
-                                       server['port'],
-                                       server['sslmode'])
+        connection = get_db_connection(
+            db_name,
+            server['username'],
+            server['db_password'],
+            server['host'],
+            server['port'],
+            server['sslmode']
+        )
         old_isolation_level = connection.isolation_level
         connection.set_isolation_level(0)
         pg_cursor = connection.cursor()
@@ -351,13 +372,17 @@ def drop_database(connection, database_name):
         pg_cursor = connection.cursor()
         if connection.server_version >= 90100:
             pg_cursor.execute(
-                "SELECT pg_terminate_backend(pg_stat_activity.pid) FROM 
pg_stat_activity "
-                "WHERE pg_stat_activity.datname ='%s' AND pid <> 
pg_backend_pid();" % database_name
+                "SELECT pg_terminate_backend(pg_stat_activity.pid) "
+                "FROM pg_stat_activity "
+                "WHERE pg_stat_activity.datname ='%s' AND "
+                "pid <> pg_backend_pid();" % database_name
             )
         else:
             pg_cursor.execute(
-                "SELECT pg_terminate_backend(procpid) FROM pg_stat_activity " \
-                "WHERE pg_stat_activity.datname ='%s' AND 
current_query='<IDLE>';" % database_name
+                "SELECT pg_terminate_backend(procpid) "
+                "FROM pg_stat_activity "
+                "WHERE pg_stat_activity.datname ='%s' "
+                "AND current_query='<IDLE>';" % database_name
             )
         pg_cursor.execute("SELECT * FROM pg_database db WHERE"
                           " db.datname='%s'" % database_name)
@@ -401,8 +426,12 @@ def create_server(server):
         server_id = cur.lastrowid
         conn.commit()
         # Add server info to parent_node_dict
-        regression.parent_node_dict["server"].append({"server_id": server_id,
-                                                      "server": server})
+        regression.parent_node_dict["server"].append(
+            {
+                "server_id": server_id,
+                "server": server
+            }
+        )
 
         return server_id
     except Exception as exception:
@@ -421,17 +450,21 @@ def delete_server_with_api(tester, sid):
 
 def add_db_to_parent_node_dict(srv_id, db_id, test_db_name):
     """ This function stores the database details into parent dict """
-    regression.parent_node_dict["database"].append({"server_id": srv_id,
-                                                    "db_id": db_id,
-                                                    "db_name": test_db_name})
+    regression.parent_node_dict["database"].append({
+        "server_id": srv_id,
+        "db_id": db_id,
+        "db_name": test_db_name
+    })
 
 
 def add_schema_to_parent_node_dict(srv_id, db_id, schema_id, schema_name):
     """ This function stores the schema details into parent dict """
-    regression.parent_node_dict["schema"].append({"server_id": srv_id,
-                                                  "db_id": db_id,
-                                                  "schema_id": schema_id,
-                                                  "schema_name": schema_name})
+    regression.parent_node_dict["schema"].append({
+        "server_id": srv_id,
+        "db_id": db_id,
+        "schema_id": schema_id,
+        "schema_name": schema_name
+    })
 
 
 def create_parent_server_node(server_info):
@@ -449,16 +482,19 @@ def create_parent_server_node(server_info):
     add_db_to_parent_node_dict(srv_id, db_id, test_db_name)
     # Create schema
     schema_name = "test_schema_%s" % str(uuid.uuid4())[1:6]
-    connection = get_db_connection(test_db_name,
-                                   server_info['username'],
-                                   server_info['db_password'],
-                                   server_info['host'],
-                                   server_info['port'],
-                                   server_info['sslmode'])
+    connection = get_db_connection(
+        test_db_name,
+        server_info['username'],
+        server_info['db_password'],
+        server_info['host'],
+        server_info['port'],
+        server_info['sslmode']
+    )
 
     schema = regression.schema_utils.create_schema(connection, schema_name)
-    add_schema_to_parent_node_dict(srv_id, db_id, schema[0],
-                                   schema[1])
+    add_schema_to_parent_node_dict(
+        srv_id, db_id, schema[0], schema[1]
+    )
 
 
 def delete_test_server(tester):
@@ -473,35 +509,43 @@ def delete_test_server(tester):
             srv_id = test_server["server_id"]
             servers_dict = test_server["server"]
             for database in test_databases:
-                connection = get_db_connection(servers_dict['db'],
-                                               servers_dict['username'],
-                                               servers_dict['db_password'],
-                                               servers_dict['host'],
-                                               servers_dict['port'],
-                                               servers_dict['sslmode'])
+                connection = get_db_connection(
+                    servers_dict['db'],
+                    servers_dict['username'],
+                    servers_dict['db_password'],
+                    servers_dict['host'],
+                    servers_dict['port'],
+                    servers_dict['sslmode']
+                )
                 database_name = database["db_name"]
                 # Drop database
                 drop_database(connection, database_name)
             for role in test_roles:
-                connection = get_db_connection(servers_dict['db'],
-                                               servers_dict['username'],
-                                               servers_dict['db_password'],
-                                               servers_dict['host'],
-                                               servers_dict['port'],
-                                               servers_dict['sslmode'])
+                connection = get_db_connection(
+                    servers_dict['db'],
+                    servers_dict['username'],
+                    servers_dict['db_password'],
+                    servers_dict['host'],
+                    servers_dict['port'],
+                    servers_dict['sslmode']
+                )
                 # Delete role
-                regression.roles_utils.delete_role(connection,
-                                                   role["role_name"])
+                regression.roles_utils.delete_role(
+                    connection, role["role_name"]
+                )
             for tablespace in test_table_spaces:
-                connection = get_db_connection(servers_dict['db'],
-                                               servers_dict['username'],
-                                               servers_dict['db_password'],
-                                               servers_dict['host'],
-                                               servers_dict['port'],
-                                               servers_dict['sslmode'])
+                connection = get_db_connection(
+                    servers_dict['db'],
+                    servers_dict['username'],
+                    servers_dict['db_password'],
+                    servers_dict['host'],
+                    servers_dict['port'],
+                    servers_dict['sslmode']
+                )
                 # Delete tablespace
                 regression.tablespace_utils.delete_tablespace(
-                    connection, tablespace["tablespace_name"])
+                    connection, tablespace["tablespace_name"]
+                )
             # Delete server
             delete_server_with_api(tester, srv_id)
     except Exception:
@@ -528,8 +572,10 @@ def get_db_server(sid):
     connection = ''
     conn = sqlite3.connect(config.TEST_SQLITE_PATH)
     cur = conn.cursor()
-    server = cur.execute('SELECT name, host, port, maintenance_db,'
-                         ' username, ssl_mode FROM server where id=%s' % sid)
+    server = cur.execute(
+        'SELECT name, host, port, maintenance_db,'
+        ' username, ssl_mode FROM server where id=%s' % sid
+    )
     server = server.fetchone()
     if server:
         name = server[0]
@@ -543,12 +589,9 @@ def get_db_server(sid):
         db_password = get_db_password(config_servers, name, host, db_port)
         if db_password:
             # Drop database
-            connection = get_db_connection(db_name,
-                                           username,
-                                           db_password,
-                                           host,
-                                           db_port,
-                                           ssl_mode)
+            connection = get_db_connection(
+                db_name, username, db_password, host, db_port, ssl_mode
+            )
     conn.close()
     return connection
 
@@ -564,13 +607,13 @@ def _cleanup(tester, app_starter):
      schemas etc) during the test suite run"""
     try:
         test_servers = regression.parent_node_dict["server"] + \
-                       regression.node_info_dict["sid"]
+            regression.node_info_dict["sid"]
         test_databases = regression.parent_node_dict["database"] + \
-                         regression.node_info_dict["did"]
+            regression.node_info_dict["did"]
         test_table_spaces = regression.parent_node_dict["tablespace"] + \
-                            regression.node_info_dict["tsid"]
+            regression.node_info_dict["tsid"]
         test_roles = regression.parent_node_dict["role"] + \
-                     regression.node_info_dict["lrid"]
+            regression.node_info_dict["lrid"]
         # Drop databases
         for database in test_databases:
             connection = get_db_server(database["server_id"])
diff --git a/web/regression/runtests.py b/web/regression/runtests.py
index 8eeab84..9ff1811 100644
--- a/web/regression/runtests.py
+++ b/web/regression/runtests.py
@@ -87,7 +87,7 @@ if pgadmin_credentials:
                 'login_password'])
 
 # Execute the setup file
-exec (open("setup.py").read())
+exec(open("setup.py").read())
 
 # Get the config database schema version. We store this in pgadmin.model
 # as it turns out that putting it in the config files isn't a great idea
@@ -210,10 +210,15 @@ def add_arguments():
     """
 
     parser = argparse.ArgumentParser(description='Test suite for pgAdmin4')
-    parser.add_argument('--pkg', help='Executes the test cases of particular'
-                                      ' package and subpackages')
-    parser.add_argument('--exclude', help='Skips execution of the test '
-                                          'cases of particular package and 
sub-packages')
+    parser.add_argument(
+        '--pkg',
+        help='Executes the test cases of particular package and subpackages'
+    )
+    parser.add_argument(
+        '--exclude',
+        help='Skips execution of the test cases of particular package and '
+             'sub-packages'
+    )
     arg = parser.parse_args()
 
     return arg
@@ -314,12 +319,12 @@ if __name__ == '__main__':
         signal.signal(getattr(signal, sig), sig_handler)
 
     # Set basic logging configuration for log file
-    logging.basicConfig(level=logging.DEBUG,
-                        format='%(asctime)s:%(levelname)s:%(name)s:%(message)s'
-                        ,
-                        filename=CURRENT_PATH + "/" + "regression.log",
-                        filemode='w'
-                        )
+    logging.basicConfig(
+        level=logging.DEBUG,
+        format='%(asctime)s:%(levelname)s:%(name)s:%(message)s',
+        filename=CURRENT_PATH + "/" + "regression.log",
+        filemode='w'
+    )
 
     # Create logger to write log in the logger file as well as on console
     stderr_logger = logging.getLogger('STDERR')
@@ -343,8 +348,8 @@ if __name__ == '__main__':
 
             suite = get_suite(test_module_list, server, test_client)
             tests = unit_test.TextTestRunner(stream=sys.stderr,
-                                            descriptions=True,
-                                            verbosity=2).run(suite)
+                                             descriptions=True,
+                                             verbosity=2).run(suite)
 
             ran_tests, failed_cases, skipped_cases, passed_cases = \
                 get_tests_result(tests)
@@ -364,12 +369,16 @@ if __name__ == '__main__':
         if handle_cleanup:
             handle_cleanup()
 
-    print("\n==============================================================="
-          "=======", file=sys.stderr)
+    print(
+        "\n==============================================================="
+        "=======",
+        file=sys.stderr
+    )
     print("Test Result Summary", file=sys.stderr)
     print(
         "==================================================================="
-        "===\n", file=sys.stderr)
+        "===\n", file=sys.stderr
+    )
 
     test_result_json = {}
     for server_res in test_result:
@@ -404,10 +413,11 @@ if __name__ == '__main__':
             file=sys.stderr)
 
         temp_dict_for_server = {
-            server_res: {"tests_passed": [total_passed_cases, passed_cases],
-                         "tests_failed": [total_failed, failed_cases_json],
-                         "tests_skipped": [total_skipped, skipped_cases_json]
-                         }
+            server_res: {
+                "tests_passed": [total_passed_cases, passed_cases],
+                "tests_failed": [total_failed, failed_cases_json],
+                "tests_skipped": [total_skipped, skipped_cases_json]
+            }
         }
         test_result_json.update(temp_dict_for_server)
 
@@ -418,7 +428,9 @@ if __name__ == '__main__':
 
     print(
         "==================================================================="
-        "===\n", file=sys.stderr)
+        "===\n",
+        file=sys.stderr
+    )
 
     print("Please check output in file: %s/regression.log\n" % CURRENT_PATH)
 

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