This is an automated email from the ASF dual-hosted git repository.

bertty pushed a commit to branch python-platform
in repository https://gitbox.apache.org/repos/asf/incubator-wayang.git

commit 1b2ab52933c993f8b300e546ed8dcfcf289a8003
Author: Bertty Contreras-Rojas <[email protected]>
AuthorDate: Thu Apr 7 22:48:43 2022 +0200

    [WAYANG-#8] remove the warning and clean code
    
    Signed-off-by: bertty <[email protected]>
---
 python/old_code/test.py                            |  4 +-
 python/old_code/tests/full_java_test.py            |  4 +-
 python/old_code/tests/full_spark_test.py           |  6 +--
 python/src/pywy/core/__init__.py                   |  2 +-
 python/src/pywy/core/channel.py                    | 15 +++----
 python/src/pywy/core/executor.py                   |  3 +-
 python/src/pywy/core/mapping.py                    |  4 +-
 python/src/pywy/core/plan.py                       | 24 +++++------
 python/src/pywy/core/platform.py                   |  4 +-
 python/src/pywy/core/plugin.py                     |  5 +--
 python/src/pywy/core/translator.py                 | 46 +++++++--------------
 python/src/pywy/graph/graph.py                     | 47 +++++++++++-----------
 python/src/pywy/graph/types.py                     | 27 +++++++------
 python/src/pywy/operators/__init__.py              | 12 +++---
 python/src/pywy/operators/base.py                  | 46 ++++++++++-----------
 python/src/pywy/operators/sink.py                  |  9 +++--
 python/src/pywy/operators/source.py                | 17 ++++----
 python/src/pywy/operators/unary.py                 | 41 ++++++++++---------
 python/src/pywy/platforms/python/channels.py       | 16 +++++---
 python/src/pywy/platforms/python/execution.py      | 20 ++++-----
 python/src/pywy/platforms/python/mappings.py       |  8 ++--
 .../src/pywy/platforms/python/operator/__init__.py |  2 +-
 .../python/operator/py_execution_operator.py       |  3 +-
 .../platforms/python/operator/py_sink_textfile.py  | 17 ++++----
 .../python/operator/py_source_textfile.py          | 14 +++----
 .../platforms/python/operator/py_unary_filter.py   | 13 +++---
 python/src/pywy/platforms/python/platform.py       |  3 +-
 python/src/pywy/platforms/python/plugin.py         |  6 +--
 python/src/pywy/plugins.py                         |  8 ++--
 python/src/pywy/types.py                           | 24 +++++++++--
 30 files changed, 224 insertions(+), 226 deletions(-)

diff --git a/python/old_code/test.py b/python/old_code/test.py
index 1b3111c5..46d8b342 100644
--- a/python/old_code/test.py
+++ b/python/old_code/test.py
@@ -1,5 +1,5 @@
 from pywy.dataquanta import WayangContext
-from pywy.plugins import python
+from pywy.plugins import PYTHON
 
 # p = Platform("nana")
 # print("LALA "+str(p))
@@ -30,7 +30,7 @@ for index in range(0, 1):
     print(index)
     tic = time.perf_counter()
     fileop = WayangContext()\
-                .register(python)\
+                .register(PYTHON)\
                 
.textfile("/Users/bertty/databloom/blossom/python/resources/tmp" + str(index))\
                 .filter(pre)\
                 
.store_textfile("/Users/bertty/databloom/blossom/python/resources/out" + 
str(index))
diff --git a/python/old_code/tests/full_java_test.py 
b/python/old_code/tests/full_java_test.py
index e1e512b1..e16126f5 100644
--- a/python/old_code/tests/full_java_test.py
+++ b/python/old_code/tests/full_java_test.py
@@ -26,7 +26,7 @@ class MyTestCase(unittest.TestCase):
 
     def test_most_basic(self):
         descriptor = Descriptor()
-        descriptor.add_plugin(Descriptor.Plugin.java)
+        descriptor.add_plugin(Descriptor.Plugin.JAVA)
 
         plan = DataQuantaBuilder(descriptor)
         sink_dataquanta = \
@@ -38,7 +38,7 @@ class MyTestCase(unittest.TestCase):
 
     def test_single_juncture(self):
         descriptor = Descriptor()
-        descriptor.add_plugin(Descriptor.Plugin.java)
+        descriptor.add_plugin(Descriptor.Plugin.JAVA)
 
         plan = DataQuantaBuilder(descriptor)
         dq_source_a = plan.source(input_1)
diff --git a/python/old_code/tests/full_spark_test.py 
b/python/old_code/tests/full_spark_test.py
index 98efd9e9..42cd02c8 100644
--- a/python/old_code/tests/full_spark_test.py
+++ b/python/old_code/tests/full_spark_test.py
@@ -18,7 +18,7 @@
 
 def test_most_basic(self):
     descriptor = Descriptor()
-    descriptor.add_plugin(Descriptor.Plugin.spark)
+    descriptor.add_plugin(Descriptor.Plugin.SPARK)
 
     plan = DataQuantaBuilder(descriptor)
     sink_dataquanta = \
@@ -30,7 +30,7 @@ def test_most_basic(self):
 
 def test_single_juncture(self):
     descriptor = Descriptor()
-    descriptor.add_plugin(Descriptor.Plugin.spark)
+    descriptor.add_plugin(Descriptor.Plugin.SPARK)
 
     plan = DataQuantaBuilder(descriptor)
     dq_source_a = plan.source("../test/lines.txt")
@@ -43,7 +43,7 @@ def test_single_juncture(self):
 
 def test_multiple_juncture(self):
     descriptor = Descriptor()
-    descriptor.add_plugin(Descriptor.Plugin.spark)
+    descriptor.add_plugin(Descriptor.Plugin.SPARK)
 
     plan = DataQuantaBuilder(descriptor)
     dq_source_a = plan.source("../test/lines.txt")
diff --git a/python/src/pywy/core/__init__.py b/python/src/pywy/core/__init__.py
index 90da09e4..291a401d 100644
--- a/python/src/pywy/core/__init__.py
+++ b/python/src/pywy/core/__init__.py
@@ -15,4 +15,4 @@ __ALL__ = [
     Platform,
     Plugin,
     Translator
-]
\ No newline at end of file
+]
diff --git a/python/src/pywy/core/channel.py b/python/src/pywy/core/channel.py
index 18d5c3d3..a4f3bb97 100644
--- a/python/src/pywy/core/channel.py
+++ b/python/src/pywy/core/channel.py
@@ -3,18 +3,19 @@ class Channel:
     def __init__(self):
         pass
 
-    def getchannel(self) -> 'Channel':
+    def get_channel(self) -> 'Channel':
         return self
 
-    def gettype(self):
+    def get_type(self):
         return type(self)
 
+
 class ChannelDescriptor:
 
-    def __init__(self, channelType: type, isReusable: bool, 
isSuitableForBreakpoint: bool):
-        self.channelType = channelType
-        self.isReusable = isReusable
-        self.isSuitableForBreakpoint = isSuitableForBreakpoint
+    def __init__(self, channel_type: type, is_reusable: bool, 
is_suitable_for_breakpoint: bool):
+        self.channelType = channel_type
+        self.isReusable = is_reusable
+        self.isSuitableForBreakpoint = is_suitable_for_breakpoint
 
     def create_instance(self) -> Channel:
-        return self.channelType()
\ No newline at end of file
+        return self.channelType()
diff --git a/python/src/pywy/core/executor.py b/python/src/pywy/core/executor.py
index 31fcb2c7..553abdcf 100644
--- a/python/src/pywy/core/executor.py
+++ b/python/src/pywy/core/executor.py
@@ -1,9 +1,8 @@
 
-
 class Executor:
 
     def __init__(self):
         pass
 
     def execute(self, plan):
-        pass
\ No newline at end of file
+        pass
diff --git a/python/src/pywy/core/mapping.py b/python/src/pywy/core/mapping.py
index db377928..dbe299dc 100644
--- a/python/src/pywy/core/mapping.py
+++ b/python/src/pywy/core/mapping.py
@@ -1,6 +1,7 @@
 from typing import Dict
 from pywy.operators.base import PywyOperator
 
+
 class Mapping:
     mappings: Dict[str, type]
 
@@ -20,9 +21,8 @@ class Mapping:
             )
         return template(operator)
 
-
     def __str__(self):
         return str(self.mappings)
 
     def __repr__(self):
-        return self.__str__()
\ No newline at end of file
+        return self.__str__()
diff --git a/python/src/pywy/core/plan.py b/python/src/pywy/core/plan.py
index 69be6280..1826f90e 100644
--- a/python/src/pywy/core/plan.py
+++ b/python/src/pywy/core/plan.py
@@ -1,13 +1,12 @@
-from typing import ( Iterable, Set )
+from typing import (Iterable, Set)
 
 from pywy.graph.graph import WayangGraph
-from pywy.graph.types import ( NodeOperator, WGraphOfVec, NodeVec )
+from pywy.graph.types import (NodeOperator, WGraphOfVec, NodeVec)
 from pywy.operators.sink import SinkOperator
 from pywy.core.plugin import Plugin
 
 
 class PywyPlan:
-
     graph: WayangGraph
 
     def __init__(self, plugins: Set[Plugin], sinks: Iterable[SinkOperator]):
@@ -30,14 +29,13 @@ class PywyPlan:
                 return
 
             print(
-                "===========\n{}\n@@@@@ => previous is\n{}\n===========\n"
-                    .format(
-                        current.current,
-                        previous.current
-                     )
+                "===========\n{}\n@@@@@ => previous 
is\n{}\n===========\n".format(
+                    current.current,
+                    previous.current
+                )
             )
-        self.graph.traversal(None, self.graph.starting_nodes, print_plan)
 
+        self.graph.traversal(None, self.graph.starting_nodes, print_plan)
 
     def printTuple(self):
         def print_plan(current: NodeVec, previous: NodeVec):
@@ -53,9 +51,9 @@ class PywyPlan:
             print(
                 "############\n{}\n@@@@@ => previous is\n{}\n############\n"
                     .format(
-                        current.current,
-                        previous.current
-                     )
+                    current.current,
+                    previous.current
+                )
             )
-        self.graph.traversal(None, self.graph.starting_nodes, print_plan)
 
+        self.graph.traversal(None, self.graph.starting_nodes, print_plan)
diff --git a/python/src/pywy/core/platform.py b/python/src/pywy/core/platform.py
index caece352..c3f6b968 100644
--- a/python/src/pywy/core/platform.py
+++ b/python/src/pywy/core/platform.py
@@ -10,8 +10,7 @@ class Platform:
       platform name, it uses as identification
     """
 
-    name : str
-    #configuration : dict[str, str]
+    name: str
 
     def __init__(self, name):
         self.name = name
@@ -21,4 +20,3 @@ class Platform:
 
     def __repr__(self):
         return self.__str__()
-
diff --git a/python/src/pywy/core/plugin.py b/python/src/pywy/core/plugin.py
index b6f84d88..be2d691c 100644
--- a/python/src/pywy/core/plugin.py
+++ b/python/src/pywy/core/plugin.py
@@ -4,6 +4,7 @@ from pywy.core.executor import Executor
 from pywy.core.platform import Platform
 from pywy.core.mapping import Mapping
 
+
 class Plugin:
     """
     A plugin contributes the following components to a :class:`Context`
@@ -16,7 +17,7 @@ class Plugin:
     platforms: Set[Platform]
     mappings: Mapping
 
-    def __init__(self, platforms:Set[Platform], mappings: Mapping = Mapping()):
+    def __init__(self, platforms: Set[Platform], mappings: Mapping = 
Mapping()):
         self.platforms = platforms
         self.mappings = mappings
 
@@ -31,5 +32,3 @@ class Plugin:
 
     def __repr__(self):
         return self.__str__()
-
-
diff --git a/python/src/pywy/core/translator.py 
b/python/src/pywy/core/translator.py
index f70b2cd1..0e0acfcb 100644
--- a/python/src/pywy/core/translator.py
+++ b/python/src/pywy/core/translator.py
@@ -1,59 +1,41 @@
-from pywy.graph.types import ( WGraphOfVec, NodeVec )
+from pywy.graph.types import (WGraphOfVec, NodeVec)
 from pywy.core.plugin import Plugin
 from pywy.core.plan import PywyPlan
 from pywy.core.mapping import Mapping
 
+
 class Translator:
 
     plugin: Plugin
-    plan : PywyPlan
+    plan: PywyPlan
 
     def __init__(self, plugin: Plugin, plan: PywyPlan):
         self.plugin = plugin
         self.plan = plan
 
     def translate(self):
-        mappings:Mapping = self.plugin.get_mappings()
+        mappings: Mapping = self.plugin.get_mappings()
         graph = WGraphOfVec(self.plan.sinks)
-        def translate2plugin(current: NodeVec, next: NodeVec):
-            if current is None:
+
+        def translate2plugin(current_op: NodeVec, next_op: NodeVec):
+            if current_op is None:
                 return
 
-            if current.current[1] is None:
-                current.current[1] = 
mappings.get_instanceof(current.current[0])
+            if current_op.current[1] is None:
+                current_op.current[1] = 
mappings.get_instanceof(current_op.current[0])
 
-            if next is None:
+            if next_op is None:
                 return
-            if next.current[1] is None:
-                next.current[1] = mappings.get_instanceof(next.current[0])
+            if next_op.current[1] is None:
+                next_op.current[1] = 
mappings.get_instanceof(next_op.current[0])
 
             # TODO not necesary it it 0
-            current.current[1].connect(0, next.current[1], 0)
+            current_op.current[1].connect(0, next_op.current[1], 0)
 
         graph.traversal(None, graph.starting_nodes, translate2plugin)
 
-        # def print_plan(current: NodeVec, previous: NodeVec):
-        #     if current is None:
-        #         print("this is source")
-        #         print(previous.current)
-        #         return
-        #     if previous is None:
-        #         print("this is sink")
-        #         print(current.current)
-        #         return
-        #
-        #     print(
-        #         "############\n{}\n@@@@@ => previous is\n{}\n############\n"
-        #             .format(
-        #                 current.current,
-        #                 previous.current
-        #              )
-        #     )
-        #
-        # graph.traversal(None, graph.starting_nodes, print_plan, False)
-
         node = []
         for elem in graph.starting_nodes:
             node.append(elem.current[1])
 
-        return PywyPlan(self.plugin, node)
\ No newline at end of file
+        return PywyPlan({self.plugin}, node)
diff --git a/python/src/pywy/graph/graph.py b/python/src/pywy/graph/graph.py
index ff1c68c1..10624f3b 100644
--- a/python/src/pywy/graph/graph.py
+++ b/python/src/pywy/graph/graph.py
@@ -1,9 +1,8 @@
 from pywy.types import T
-from typing import ( Iterable, Dict, Callable, List, Any, Generic )
+from typing import (Iterable, Dict, Callable, Any, Generic, Optional)
 
 
 class GraphNode(Generic[T]):
-
     current: T
     visited: bool
 
@@ -11,19 +10,16 @@ class GraphNode(Generic[T]):
         self.current = op
         self.visited = False
 
-    def getadjacents(self) -> Iterable[T]:
+    def get_adjacents(self) -> Iterable[T]:
         pass
 
-    def build_node(self, t:T) -> 'GraphNode[T]':
+    def build_node(self, t: T) -> 'GraphNode[T]':
         pass
 
-    def adjacents(self, created: Dict[T, 'GraphNode[T]']) -> 
Iterable['GraphNode[T]']:
-        adjacent = self.getadjacents()
-
-        if len(adjacent) == 0:
-            return []
+    def walk(self, created: Dict[T, 'GraphNode[T]']) -> 
Iterable['GraphNode[T]']:
+        adjacent = self.get_adjacents()
 
-        def wrap(op:T):
+        def wrap(op: T):
             if op is None:
                 return None
             if op not in created:
@@ -32,37 +28,40 @@ class GraphNode(Generic[T]):
 
         return map(wrap, adjacent)
 
-    def visit(self, parent: 'GraphNode[T]', udf: Callable[['GraphNode[T]', 
'GraphNode[T]'], Any], visit_status: bool = True):
-        if(self.visited == visit_status):
+    def visit(self,
+              parent: 'GraphNode[T]',
+              udf: Callable[['GraphNode[T]', 'GraphNode[T]'], Any],
+              visit_status: bool = True):
+        if self.visited == visit_status:
             return
-        self.visited != visit_status
+        self.visited = ~ visit_status
         return udf(self, parent)
 
 
 class WayangGraph(Generic[T]):
+    starting_nodes: Iterable[GraphNode[T]]
+    created_nodes: Dict[T, GraphNode[T]]
 
-    starting_nodes : List[GraphNode[T]]
-    created_nodes : Dict[T, GraphNode[T]]
-
-    def __init__(self, nodes: List[T]):
+    def __init__(self, nodes: Iterable[T]):
         self.created_nodes = {}
-        self.starting_nodes = list()
+        start = list()
         for node in nodes:
             tmp = self.build_node(node)
-            self.starting_nodes.append(tmp)
+            start.append(tmp)
             self.created_nodes[node] = tmp
+        self.starting_nodes = start
 
-    def build_node(self, t:T) -> GraphNode[T]:
+    def build_node(self, t: T) -> GraphNode[T]:
         pass
 
     def traversal(
             self,
             origin: GraphNode[T],
             nodes: Iterable[GraphNode[T]],
-            udf: Callable[['GraphNode[T]', 'GraphNode[T]'], Any],
+            udf: Callable[[GraphNode[T], GraphNode[T]], Any],
             visit_status: bool = True
     ):
         for node in nodes:
-            adjacents = node.adjacents(self.created_nodes)
-            self.traversal(node, adjacents, udf, visit_status)
-            node.visit(origin, udf)
\ No newline at end of file
+            adjacent = node.walk(self.created_nodes)
+            self.traversal(node, adjacent, udf, visit_status)
+            node.visit(origin, udf)
diff --git a/python/src/pywy/graph/types.py b/python/src/pywy/graph/types.py
index 2c014263..72f48bb3 100644
--- a/python/src/pywy/graph/types.py
+++ b/python/src/pywy/graph/types.py
@@ -1,28 +1,30 @@
-from typing import ( Iterable, List )
+from typing import (Iterable, List)
 
-from pywy.graph.graph import ( GraphNode, WayangGraph )
+from pywy.graph.graph import (GraphNode, WayangGraph)
 from pywy.operators.base import PywyOperator
 
+
 class NodeOperator(GraphNode[PywyOperator]):
 
     def __init__(self, op: PywyOperator):
         super(NodeOperator, self).__init__(op)
 
-    def getadjacents(self) -> Iterable[PywyOperator]:
+    def get_adjacents(self) -> Iterable[PywyOperator]:
         operator: PywyOperator = self.current
         if operator is None or operator.inputs == 0:
             return []
         return operator.inputOperator
 
-    def build_node(self, t:PywyOperator) -> 'NodeOperator':
+    def build_node(self, t: PywyOperator) -> 'NodeOperator':
         return NodeOperator(t)
 
+
 class WGraphOfOperator(WayangGraph[NodeOperator]):
 
-    def __init__(self, nodes: List[PywyOperator]):
+    def __init__(self, nodes: Iterable[PywyOperator]):
         super(WGraphOfOperator, self).__init__(nodes)
 
-    def build_node(self, t:PywyOperator) -> NodeOperator:
+    def build_node(self, t: PywyOperator) -> NodeOperator:
         return NodeOperator(t)
 
 
@@ -31,13 +33,13 @@ class NodeVec(GraphNode[List[PywyOperator]]):
     def __init__(self, op: PywyOperator):
         super(NodeVec, self).__init__([op, None])
 
-    def getadjacents(self) -> Iterable[List[PywyOperator]]:
+    def get_adjacents(self) -> Iterable[List[PywyOperator]]:
         operator: PywyOperator = self.current[0]
         if operator is None or operator.inputs == 0:
             return []
-        return operator.inputOperator
+        return [operator.inputOperator, None]
 
-    def build_node(self, t:PywyOperator) -> 'NodeVec':
+    def build_node(self, t: PywyOperator) -> 'NodeVec':
         return NodeVec(t)
 
     def __str__(self):
@@ -46,10 +48,11 @@ class NodeVec(GraphNode[List[PywyOperator]]):
     def __repr__(self):
         return self.__str__()
 
+
 class WGraphOfVec(WayangGraph[NodeVec]):
 
-    def __init__(self, nodes: List[PywyOperator]):
+    def __init__(self, nodes: Iterable[PywyOperator]):
         super(WGraphOfVec, self).__init__(nodes)
 
-    def build_node(self, t:PywyOperator) -> NodeVec:
-        return NodeVec(t)
\ No newline at end of file
+    def build_node(self, t: PywyOperator) -> NodeVec:
+        return NodeVec(t)
diff --git a/python/src/pywy/operators/__init__.py 
b/python/src/pywy/operators/__init__.py
index 4c1c7181..e2dc0fdc 100644
--- a/python/src/pywy/operators/__init__.py
+++ b/python/src/pywy/operators/__init__.py
@@ -2,13 +2,13 @@ from pywy.operators.base import PywyOperator
 from pywy.operators.sink import TextFileSink, SinkOperator
 from pywy.operators.source import TextFileSource
 from pywy.operators.unary import FilterOperator, MapOperator, FlatmapOperator
-#
-__ALL__= [
+
+__ALL__ = [
      PywyOperator,
      TextFileSink,
      TextFileSource,
      FilterOperator,
-     SinkOperator
-#     MapOperator,
-#     FlatmapOperator
-]
\ No newline at end of file
+     SinkOperator,
+     MapOperator,
+     FlatmapOperator
+]
diff --git a/python/src/pywy/operators/base.py 
b/python/src/pywy/operators/base.py
index 26e8bf9b..3b5cca9e 100644
--- a/python/src/pywy/operators/base.py
+++ b/python/src/pywy/operators/base.py
@@ -1,14 +1,15 @@
-from typing import ( TypeVar, Optional, List, Set )
+from typing import (TypeVar, Optional, List, Set)
 from pywy.core import ChannelDescriptor, Channel
 
+
 class PywyOperator:
 
-    inputSlot : List[TypeVar]
-    inputChannel : List[Channel]
-    inputChannelDescriptor : List[ChannelDescriptor]
+    inputSlot: List[TypeVar]
+    inputChannel: List[Channel]
+    inputChannelDescriptor: List[ChannelDescriptor]
     inputOperator: List['PywyOperator']
-    inputs : int
-    outputSlot : List[TypeVar]
+    inputs: int
+    outputSlot: List[TypeVar]
     outputChannel: List[Channel]
     outputChannelDescriptor: List[ChannelDescriptor]
     outputOperator: List['PywyOperator']
@@ -16,16 +17,16 @@ class PywyOperator:
 
     def __init__(self,
                  name: str,
-                 input: Optional[TypeVar] = None,
-                 output: Optional[TypeVar] = None,
-                 input_lenght: Optional[int] = 1,
-                 output_lenght: Optional[int] = 1
-    ):
+                 input_type: TypeVar = None,
+                 output_type: TypeVar = None,
+                 input_length: Optional[int] = 1,
+                 output_length: Optional[int] = 1
+                 ):
         self.name = (self.prefix() + name + self.postfix()).strip()
-        self.inputSlot = input
-        self.inputs = input_lenght
-        self.outputSlot = output
-        self.outputs = output_lenght
+        self.inputSlot = [input_type]
+        self.inputs = input_length
+        self.outputSlot = [output_type]
+        self.outputs = output_length
         self.inputOperator = [None] * self.inputs
         self.outputOperator = [None] * self.outputs
         self.inputChannel = [None] * self.inputs
@@ -39,6 +40,7 @@ class PywyOperator:
                     self.inputs
                 )
             )
+
     def validate_outputs(self, vec):
         if len(vec) != self.outputs:
             raise Exception(
@@ -47,11 +49,12 @@ class PywyOperator:
                     self.inputs
                 )
             )
-    def validate_channels(self, input, output):
-        self.validate_inputs(input)
-        self.validate_outputs(output)
 
-    def connect(self, port:int, that: 'PywyOperator', port_that:int):
+    def validate_channels(self, inputs, outputs):
+        self.validate_inputs(inputs)
+        self.validate_outputs(outputs)
+
+    def connect(self, port: int, that: 'PywyOperator', port_that: int):
         self.outputOperator[port] = that
         that.inputOperator[port_that] = self
 
@@ -67,7 +70,7 @@ class PywyOperator:
     def postfix(self) -> str:
         return ''
 
-    def name_basic(self, with_prefix: bool = False, with_postfix:bool = True):
+    def name_basic(self, with_prefix: bool = False, with_postfix: bool = True):
         prefix = len(self.prefix()) if not with_prefix else 0
         postfix = len(self.postfix()) if not with_postfix else 0
         return self.name[prefix:len(self.name) - postfix]
@@ -83,6 +86,3 @@ class PywyOperator:
 
     def __repr__(self):
         return self.__str__()
-
-
-
diff --git a/python/src/pywy/operators/sink.py 
b/python/src/pywy/operators/sink.py
index e3ddd7d8..6b13b676 100644
--- a/python/src/pywy/operators/sink.py
+++ b/python/src/pywy/operators/sink.py
@@ -3,15 +3,17 @@ from typing import Any
 from pywy.types import GenericTco
 from pywy.operators.base import PywyOperator
 
+
 class SinkOperator(PywyOperator):
 
     def postfix(self) -> str:
         return 'Sink'
 
+
 class SinkUnaryOperator(SinkOperator):
 
-    def __init__(self, name:str, input:GenericTco=Any):
-        super().__init__(name, input, None, 1, 0)
+    def __init__(self, name: str, input_type: GenericTco = Any):
+        super().__init__(name, input_type, None, 1, 0)
 
     def __str__(self):
         return super().__str__()
@@ -20,7 +22,6 @@ class SinkUnaryOperator(SinkOperator):
         return super().__repr__()
 
 
-
 class TextFileSink(SinkUnaryOperator):
 
     path: str
@@ -33,4 +34,4 @@ class TextFileSink(SinkUnaryOperator):
         return super().__str__()
 
     def __repr__(self):
-        return super().__repr__()
\ No newline at end of file
+        return super().__repr__()
diff --git a/python/src/pywy/operators/source.py 
b/python/src/pywy/operators/source.py
index 42af498e..fdbd0b93 100644
--- a/python/src/pywy/operators/source.py
+++ b/python/src/pywy/operators/source.py
@@ -1,14 +1,15 @@
 from pywy.operators.base import PywyOperator
 
+
 class SourceUnaryOperator(PywyOperator):
 
-    def __init__(self, name:str):
+    def __init__(self, name: str):
         super(SourceUnaryOperator, self).__init__(
-            name = name,
-            input = None,
-            output = str,
-            input_lenght = 0,
-            output_lenght = 1
+            name=name,
+            input_type=None,
+            output_type=str,
+            input_length=0,
+            output_length=1
         )
 
     def postfix(self) -> str:
@@ -21,9 +22,7 @@ class SourceUnaryOperator(PywyOperator):
         return super().__repr__()
 
 
-
 class TextFileSource(SourceUnaryOperator):
-
     path: str
 
     def __init__(self, path: str):
@@ -34,4 +33,4 @@ class TextFileSource(SourceUnaryOperator):
         return super().__str__()
 
     def __repr__(self):
-        return super().__repr__()
\ No newline at end of file
+        return super().__repr__()
diff --git a/python/src/pywy/operators/unary.py 
b/python/src/pywy/operators/unary.py
index 198a9fbf..cfd585f1 100644
--- a/python/src/pywy/operators/unary.py
+++ b/python/src/pywy/operators/unary.py
@@ -1,22 +1,21 @@
 from itertools import chain
 from pywy.operators.base import PywyOperator
 from pywy.types import (
-    GenericTco,
-    GenericUco,
-    Predicate,
-    get_type_predicate,
-    Function,
-    get_type_function,
-    FlatmapFunction,
-    get_type_flatmap_function
+                            GenericTco,
+                            GenericUco,
+                            Predicate,
+                            get_type_predicate,
+                            Function,
+                            get_type_function,
+                            FlatmapFunction,
+                            get_type_flatmap_function
                         )
 
 
-
 class UnaryToUnaryOperator(PywyOperator):
 
-    def __init__(self, name:str, input:GenericTco, output:GenericUco):
-        super().__init__(name, input, output, 1, 1)
+    def __init__(self, name: str, input_type: GenericTco, output_type: 
GenericUco):
+        super().__init__(name, input_type, output_type, 1, 1)
 
     def postfix(self) -> str:
         return 'OperatorUnary'
@@ -28,14 +27,13 @@ class UnaryToUnaryOperator(PywyOperator):
         return super().__repr__()
 
 
-
 class FilterOperator(UnaryToUnaryOperator):
 
     predicate: Predicate
 
     def __init__(self, predicate: Predicate):
-        type = get_type_predicate(predicate) if predicate else None
-        super().__init__("Filter", type, type)
+        predicate_type = get_type_predicate(predicate) if predicate else None
+        super().__init__("Filter", predicate_type, predicate_type)
         self.predicate = predicate
 
     def __str__(self):
@@ -44,6 +42,7 @@ class FilterOperator(UnaryToUnaryOperator):
     def __repr__(self):
         return super().__repr__()
 
+
 class MapOperator(UnaryToUnaryOperator):
 
     function: Function
@@ -53,6 +52,7 @@ class MapOperator(UnaryToUnaryOperator):
         super().__init__("Map", types[0], types[1])
         self.function = function
 
+    # TODO remove wrapper
     def getWrapper(self):
         udf = self.function
         def func(iterator):
@@ -68,15 +68,16 @@ class MapOperator(UnaryToUnaryOperator):
 
 class FlatmapOperator(UnaryToUnaryOperator):
 
-    fmfunction: FlatmapFunction
+    fm_function: FlatmapFunction
 
-    def __init__(self, fmfunction: FlatmapFunction):
-        types = get_type_flatmap_function(fmfunction) if fmfunction else 
(None, None)
+    def __init__(self, fm_function: FlatmapFunction):
+        types = get_type_flatmap_function(fm_function) if fm_function else 
(None, None)
         super().__init__("Flatmap", types[0], types[1])
-        self.fmfunction = fmfunction
+        self.fm_function = fm_function
 
+    # TODO remove wrapper
     def getWrapper(self):
-        udf = self.fmfunction
+        udf = self.fm_function
         def func(iterator):
             return chain.from_iterable(map(udf, iterator))
         return func
@@ -85,4 +86,4 @@ class FlatmapOperator(UnaryToUnaryOperator):
         return super().__str__()
 
     def __repr__(self):
-        return super().__repr__()
\ No newline at end of file
+        return super().__repr__()
diff --git a/python/src/pywy/platforms/python/channels.py 
b/python/src/pywy/platforms/python/channels.py
index dc976bb6..0dee78a1 100644
--- a/python/src/pywy/platforms/python/channels.py
+++ b/python/src/pywy/platforms/python/channels.py
@@ -1,9 +1,10 @@
 from typing import ( Iterable, Callable )
 from pywy.core import (Channel, ChannelDescriptor)
 
+
 class PyIteratorChannel(Channel):
 
-    iterable : Iterable
+    iterable: Iterable
 
     def __init__(self):
         Channel.__init__(self)
@@ -15,9 +16,10 @@ class PyIteratorChannel(Channel):
         self.iterable = iterable
         return self
 
+
 class PyCallableChannel(Channel):
 
-    udf : Callable
+    udf: Callable
 
     def __init__(self):
         Channel.__init__(self)
@@ -35,9 +37,10 @@ class PyCallableChannel(Channel):
             return function_a(function_b(iterable))
         return executable
 
+
 class PyFileChannel(Channel):
 
-    path : str
+    path: str
 
     def __init__(self):
         Channel.__init__(self)
@@ -49,6 +52,7 @@ class PyFileChannel(Channel):
         self.path = path
         return self
 
-PyIteratorChannelDescriptor = ChannelDescriptor(type(PyIteratorChannel()), 
False, False)
-PyCallableChannelDescriptor = ChannelDescriptor(type(PyCallableChannel()), 
False, False)
-PyFileChannelDescriptor = ChannelDescriptor(type(PyFileChannel()), False, 
False)
\ No newline at end of file
+
+PY_ITERATOR_CHANNEL_DESCRIPTOR = ChannelDescriptor(type(PyIteratorChannel()), 
False, False)
+PY_CALLABLE_CHANNEL_DESCRIPTOR = ChannelDescriptor(type(PyCallableChannel()), 
False, False)
+PY_FILE_CHANNEL_DESCRIPTOR = ChannelDescriptor(type(PyFileChannel()), False, 
False)
diff --git a/python/src/pywy/platforms/python/execution.py 
b/python/src/pywy/platforms/python/execution.py
index 398ef892..7f8803eb 100644
--- a/python/src/pywy/platforms/python/execution.py
+++ b/python/src/pywy/platforms/python/execution.py
@@ -16,26 +16,26 @@ class PyExecutor(Executor):
         pywyPlan: PywyPlan = plan
         graph = WGraphOfOperator(pywyPlan.sinks)
 
-        def exec(current: NodeOperator, next: NodeOperator):
-            if current is None:
+        def exec(op_current: NodeOperator, op_next: NodeOperator):
+            if op_current is None:
                 return
 
-            py_current: PyExecutionOperator = current.current
+            py_current: PyExecutionOperator = op_current.current
             if py_current.outputs == 0:
                 py_current.execute(py_current.inputChannel, [])
                 return
 
-            if next is None:
+            if op_next is None:
                 return
-            py_next: PyExecutionOperator = next.current
+            py_next: PyExecutionOperator = op_next.current
             outputs = py_current.get_output_channeldescriptors()
             inputs = py_next.get_input_channeldescriptors()
 
             intersect = outputs.intersection(inputs)
             if len(intersect) == 0:
                 raise Exception(
-                    "The operator(A) {} can't connect with (B) {}, because the 
output of (A) is {} and the input of (B) is {}"
-                     .format(
+                    "The operator(A) {} can't connect with (B) {}, "
+                    "because the output of (A) is {} and the input of (B) is 
{} ".format(
                         py_current,
                         py_next,
                         outputs,
@@ -44,8 +44,8 @@ class PyExecutor(Executor):
                 )
             if len(intersect) > 1:
                 raise Exception(
-                    "The interaction between the operator (A) {} and (B) {}, 
can't be decided because are several channel availables {}"
-                     .format(
+                    "The interaction between the operator (A) {} and (B) {}, "
+                    "can't be decided because are several channel availables 
{}".format(
                         py_current,
                         py_next,
                         intersect
@@ -59,4 +59,4 @@ class PyExecutor(Executor):
             py_next.inputChannel = py_current.outputChannel
 
 
-        graph.traversal(None, graph.starting_nodes, exec)
\ No newline at end of file
+        graph.traversal(None, graph.starting_nodes, exec)
diff --git a/python/src/pywy/platforms/python/mappings.py 
b/python/src/pywy/platforms/python/mappings.py
index d949c188..9adc062a 100644
--- a/python/src/pywy/platforms/python/mappings.py
+++ b/python/src/pywy/platforms/python/mappings.py
@@ -2,9 +2,9 @@ from pywy.core import Mapping
 from pywy.platforms.python.operator import *
 
 
-PywyOperatorMappings = Mapping()
+PYWY_OPERATOR_MAPPINGS = Mapping()
 
-PywyOperatorMappings.add_mapping(PyFilterOperator())
-PywyOperatorMappings.add_mapping(PyTextFileSourceOperator())
-PywyOperatorMappings.add_mapping(PyTextFileSinkOperator())
+PYWY_OPERATOR_MAPPINGS.add_mapping(PyFilterOperator())
+PYWY_OPERATOR_MAPPINGS.add_mapping(PyTextFileSourceOperator())
+PYWY_OPERATOR_MAPPINGS.add_mapping(PyTextFileSinkOperator())
 
diff --git a/python/src/pywy/platforms/python/operator/__init__.py 
b/python/src/pywy/platforms/python/operator/__init__.py
index ec6db064..ef9d94b8 100644
--- a/python/src/pywy/platforms/python/operator/__init__.py
+++ b/python/src/pywy/platforms/python/operator/__init__.py
@@ -8,4 +8,4 @@ __ALL__ = [
     PyFilterOperator,
     PyTextFileSourceOperator,
     PyTextFileSinkOperator
-]
\ No newline at end of file
+]
diff --git a/python/src/pywy/platforms/python/operator/py_execution_operator.py 
b/python/src/pywy/platforms/python/operator/py_execution_operator.py
index 718e9c49..a2e82590 100644
--- a/python/src/pywy/platforms/python/operator/py_execution_operator.py
+++ b/python/src/pywy/platforms/python/operator/py_execution_operator.py
@@ -1,10 +1,11 @@
 from pywy.operators.base import PywyOperator
 from pywy.platforms.python.channels import Channel
 
+
 class PyExecutionOperator(PywyOperator):
 
     def prefix(self) -> str:
         return 'Py'
 
     def execute(self, inputs: Channel, output: Channel):
-        pass
\ No newline at end of file
+        pass
diff --git a/python/src/pywy/platforms/python/operator/py_sink_textfile.py 
b/python/src/pywy/platforms/python/operator/py_sink_textfile.py
index 9fe9fc06..429da96c 100644
--- a/python/src/pywy/platforms/python/operator/py_sink_textfile.py
+++ b/python/src/pywy/platforms/python/operator/py_sink_textfile.py
@@ -2,11 +2,11 @@ from typing import Set
 from pywy.operators.sink import TextFileSink
 from pywy.platforms.python.operator.py_execution_operator import 
PyExecutionOperator
 from pywy.platforms.python.channels import (
-                                                Channel,
-                                                ChannelDescriptor,
-                                                PyIteratorChannel,
-                                                PyIteratorChannelDescriptor
-                                            )
+    Channel,
+    ChannelDescriptor,
+    PyIteratorChannel,
+    PY_ITERATOR_CHANNEL_DESCRIPTOR
+)
 
 
 class PyTextFileSinkOperator(TextFileSink, PyExecutionOperator):
@@ -18,8 +18,8 @@ class PyTextFileSinkOperator(TextFileSink, 
PyExecutionOperator):
 
     def execute(self, inputs: Channel, outputs: Channel):
         self.validate_channels(inputs, outputs)
-        if isinstance(inputs[0], PyIteratorChannel) :
-            file = open(self.path,'w')
+        if isinstance(inputs[0], PyIteratorChannel):
+            file = open(self.path, 'w')
             py_in_iter_channel: PyIteratorChannel = inputs[0]
             iterable = py_in_iter_channel.provide_iterable();
             for element in iterable:
@@ -29,9 +29,8 @@ class PyTextFileSinkOperator(TextFileSink, 
PyExecutionOperator):
         else:
             raise Exception("Channel Type does not supported")
 
-
     def get_input_channeldescriptors(self) -> Set[ChannelDescriptor]:
-        return {PyIteratorChannelDescriptor}
+        return {PY_ITERATOR_CHANNEL_DESCRIPTOR}
 
     def get_output_channeldescriptors(self) -> Set[ChannelDescriptor]:
         raise Exception("The PyTextFileSource does not support Output 
Channels")
diff --git a/python/src/pywy/platforms/python/operator/py_source_textfile.py 
b/python/src/pywy/platforms/python/operator/py_source_textfile.py
index 7bdf7f2a..7fdbf740 100644
--- a/python/src/pywy/platforms/python/operator/py_source_textfile.py
+++ b/python/src/pywy/platforms/python/operator/py_source_textfile.py
@@ -2,10 +2,10 @@ from typing import Set
 from pywy.operators.source import TextFileSource
 from pywy.platforms.python.operator.py_execution_operator import 
PyExecutionOperator
 from pywy.platforms.python.channels import (
-                                                Channel,
-                                                ChannelDescriptor,
-                                                PyIteratorChannel,
-                                                PyIteratorChannelDescriptor
+    Channel,
+    ChannelDescriptor,
+    PyIteratorChannel,
+    PY_ITERATOR_CHANNEL_DESCRIPTOR
                                             )
 
 
@@ -18,7 +18,7 @@ class PyTextFileSourceOperator(TextFileSource, 
PyExecutionOperator):
 
     def execute(self, inputs: Channel, outputs: Channel):
         self.validate_channels(inputs, outputs)
-        if isinstance(outputs[0], PyIteratorChannel) :
+        if isinstance(outputs[0], PyIteratorChannel):
             py_out_iter_channel: PyIteratorChannel = outputs[0]
             py_out_iter_channel.accept_iterable(
                 open(
@@ -26,13 +26,11 @@ class PyTextFileSourceOperator(TextFileSource, 
PyExecutionOperator):
                     'r'
                 )
             )
-
         else:
             raise Exception("Channel Type does not supported")
 
-
     def get_input_channeldescriptors(self) -> Set[ChannelDescriptor]:
         raise Exception("The PyTextFileSource does not support Input Channels")
 
     def get_output_channeldescriptors(self) -> Set[ChannelDescriptor]:
-        return {PyIteratorChannelDescriptor}
+        return {PY_ITERATOR_CHANNEL_DESCRIPTOR}
diff --git a/python/src/pywy/platforms/python/operator/py_unary_filter.py 
b/python/src/pywy/platforms/python/operator/py_unary_filter.py
index ae02784d..b08bb5ca 100644
--- a/python/src/pywy/platforms/python/operator/py_unary_filter.py
+++ b/python/src/pywy/platforms/python/operator/py_unary_filter.py
@@ -5,8 +5,8 @@ from pywy.platforms.python.channels import (
                                                 Channel,
                                                 ChannelDescriptor,
                                                 PyIteratorChannel,
-                                                PyIteratorChannelDescriptor,
-                                                PyCallableChannelDescriptor,
+                                                PY_ITERATOR_CHANNEL_DESCRIPTOR,
+                                                PY_CALLABLE_CHANNEL_DESCRIPTOR,
                                                 PyCallableChannel
                                             )
 
@@ -21,11 +21,11 @@ class PyFilterOperator(FilterOperator, PyExecutionOperator):
     def execute(self, inputs: Channel, outputs: Channel):
         self.validate_channels(inputs, outputs)
         udf = self.predicate
-        if isinstance(inputs[0], PyIteratorChannel) :
+        if isinstance(inputs[0], PyIteratorChannel):
             py_in_iter_channel: PyIteratorChannel = inputs[0]
             py_out_iter_channel: PyIteratorChannel = outputs[0]
             py_out_iter_channel.accept_iterable(filter(udf, 
py_in_iter_channel.provide_iterable()))
-        elif isinstance(inputs[0], PyCallableChannel) :
+        elif isinstance(inputs[0], PyCallableChannel):
             py_in_call_channel: PyCallableChannel = inputs[0]
             py_out_call_channel: PyCallableChannel = outputs[0]
 
@@ -41,9 +41,8 @@ class PyFilterOperator(FilterOperator, PyExecutionOperator):
         else:
             raise Exception("Channel Type does not supported")
 
-
     def get_input_channeldescriptors(self) -> Set[ChannelDescriptor]:
-        return {PyIteratorChannelDescriptor, PyCallableChannelDescriptor}
+        return {PY_ITERATOR_CHANNEL_DESCRIPTOR, PY_CALLABLE_CHANNEL_DESCRIPTOR}
 
     def get_output_channeldescriptors(self) -> Set[ChannelDescriptor]:
-        return {PyIteratorChannelDescriptor, PyCallableChannelDescriptor}
+        return {PY_ITERATOR_CHANNEL_DESCRIPTOR, PY_CALLABLE_CHANNEL_DESCRIPTOR}
diff --git a/python/src/pywy/platforms/python/platform.py 
b/python/src/pywy/platforms/python/platform.py
index e2aa3fed..6434db6c 100644
--- a/python/src/pywy/platforms/python/platform.py
+++ b/python/src/pywy/platforms/python/platform.py
@@ -1,6 +1,7 @@
 from pywy.core.platform import Platform
 
+
 class PythonPlatform(Platform):
 
     def __init__(self):
-        super(PythonPlatform, self).__init__("Python")
\ No newline at end of file
+        super(PythonPlatform, self).__init__("Python")
diff --git a/python/src/pywy/platforms/python/plugin.py 
b/python/src/pywy/platforms/python/plugin.py
index 4f41470e..2c652d2e 100644
--- a/python/src/pywy/platforms/python/plugin.py
+++ b/python/src/pywy/platforms/python/plugin.py
@@ -2,13 +2,13 @@ from pywy.core import Executor
 from pywy.platforms.python.execution import PyExecutor
 from pywy.platforms.python.platform import PythonPlatform
 from pywy.core import Plugin
-from pywy.platforms.python.mappings import PywyOperatorMappings
+from pywy.platforms.python.mappings import PYWY_OPERATOR_MAPPINGS
 
 
 class PythonPlugin(Plugin):
 
     def __init__(self):
-        super(PythonPlugin, self).__init__({PythonPlatform()}, 
PywyOperatorMappings)
+        super(PythonPlugin, self).__init__({PythonPlatform()}, 
PYWY_OPERATOR_MAPPINGS)
 
     def get_executor(self) -> Executor:
-        return PyExecutor()
\ No newline at end of file
+        return PyExecutor()
diff --git a/python/src/pywy/plugins.py b/python/src/pywy/plugins.py
index cad2f356..37fb2d6d 100644
--- a/python/src/pywy/plugins.py
+++ b/python/src/pywy/plugins.py
@@ -3,8 +3,8 @@ from pywy.core import Plugin
 from pywy.platforms.python.plugin import PythonPlugin
 
 # define the basic plugins that can be used
-java = Plugin(Platform('java'))
-spark = Plugin(Platform('spark'))
-flink = Plugin(Platform('flink'))
+JAVA = Plugin({Platform('java')})
+SPARK = Plugin({Platform('spark')})
+FLINK = Plugin({Platform('flink')})
 # plugin for the python platform
-python = PythonPlugin()
+PYTHON = PythonPlugin()
diff --git a/python/src/pywy/types.py b/python/src/pywy/types.py
index e1413457..f39d4528 100644
--- a/python/src/pywy/types.py
+++ b/python/src/pywy/types.py
@@ -28,7 +28,11 @@ FlatmapFunction = Callable[[T], IterableOut]
 def get_type_predicate(call: Predicate) -> type:
     sig = signature(call)
     if len(sig.parameters) != 1:
-        raise PywyException("the parameters for the Predicate are distinct 
than one, {}".format(str(sig.parameters)))
+        raise PywyException(
+            "the parameters for the Predicate are distinct than one, 
{}".format(
+                str(sig.parameters)
+            )
+        )
 
     keys = list(sig.parameters.keys())
     return sig.parameters[keys[0]].annotation
@@ -37,7 +41,11 @@ def get_type_predicate(call: Predicate) -> type:
 def get_type_function(call: Function) -> (type, type):
     sig = signature(call)
     if len(sig.parameters) != 1:
-        raise PywyException("the parameters for the Function are distinct than 
one, {}".format(str(sig.parameters)))
+        raise PywyException(
+            "the parameters for the Function are distinct than one, {}".format(
+                str(sig.parameters)
+            )
+        )
 
     keys = list(sig.parameters.keys())
     return sig.parameters[keys[0]].annotation, sig.return_annotation
@@ -46,7 +54,11 @@ def get_type_function(call: Function) -> (type, type):
 def get_type_bifunction(call: BiFunction) -> (type, type, type):
     sig = signature(call)
     if len(sig.parameters) != 2:
-        raise PywyException("the parameters for the BiFunction are distinct 
than two, {}".format(str(sig.parameters)))
+        raise PywyException(
+            "the parameters for the BiFunction are distinct than two, 
{}".format(
+                str(sig.parameters)
+            )
+        )
 
     keys = list(sig.parameters.keys())
     return sig.parameters[keys[0]].annotation, 
sig.parameters[keys[1]].annotation, sig.return_annotation
@@ -55,7 +67,11 @@ def get_type_bifunction(call: BiFunction) -> (type, type, 
type):
 def get_type_flatmap_function(call: FlatmapFunction) -> (type, type):
     sig = signature(call)
     if len(sig.parameters) != 1:
-        raise PywyException("the parameters for the FlatmapFunction are 
distinct than one, {}".format(str(sig.parameters)))
+        raise PywyException(
+            "the parameters for the FlatmapFunction are distinct than one, 
{}".format(
+                str(sig.parameters)
+            )
+        )
 
     keys = list(sig.parameters.keys())
     return sig.parameters[keys[0]].annotation, sig.return_annotation

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