Thanks Aaron for the quick response.

Actually I can't start spyder due to PySide and as you have suggested to 
install PySide but that's also not working because it doesn't support 
Python 3.5.

[juniper@RTF_DEMO Automation]$ sudo pip install PySide  --proxy 
http://10.12.240.99:8080/
Collecting PySide
  Downloading PySide-1.2.4.tar.gz (9.3MB)
    100% |████████████████████████████████| 9.3MB 108kB/s
    Complete output from command python setup.py egg_info:
    only these python versions are supported: [(2, 6), (2, 7), (3, 2), (3, 
3), (3, 4)]

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in 
/tmp/pip-build-9pylryy2/PySide/


On Friday, January 26, 2018 at 7:40:31 AM UTC+5:30, Aaron Thompson wrote:
>
> Vishal,
>
> It seems like something has set your QT_API environment variable to 
> 'pyside' when you would usually want it to be 'pyqt5'. Alternately you 
> could just also install PySide.
>
> ~Aaron
>
> On Thursday, January 25, 2018 at 10:40:25 AM UTC-5, Vishal Mishra wrote:
>>
>> Hello All,
>>
>> I have installed spyder using pip but not able to launch it. I am using 
>> Python 3.5. Any help will be appreciated.
>>
>> [juniper@RTF_DEMO ~]$ spyder3
>> Traceback (most recent call last):
>>   File "/usr/local/lib/python3.5/site-packages/qtpy/__init__.py", line 
>> 148, in <module>
>>     from PySide import __version__ as PYSIDE_VERSION  # analysis:ignore
>> ImportError: No module named 'PySide'
>>
>> During handling of the above exception, another exception occurred:
>>
>> Traceback (most recent call last):
>>   File "/usr/local/bin/spyder3", line 11, in <module>
>>     sys.exit(main())
>>   File "/usr/local/lib/python3.5/site-packages/spyder/app/start.py", line 
>> 143, in main
>>     from spyder.app import mainwindow
>>   File "/usr/local/lib/python3.5/site-packages/spyder/app/mainwindow.py", 
>> line 49, in <module>
>>     requirements.check_qt()
>>   File "/usr/local/lib/python3.5/site-packages/spyder/requirements.py", 
>> line 39, in check_qt
>>     import qtpy
>>   File "/usr/local/lib/python3.5/site-packages/qtpy/__init__.py", line 
>> 154, in <module>
>>     raise PythonQtError('No Qt bindings could be found')
>> qtpy.PythonQtError: No Qt bindings could be found
>>
>> [juniper@RTF_DEMO ~]$ sudo spyder3
>> [sudo] password for juniper:
>> sudo: spyder3: command not found
>> [juniper@RTF_DEMO ~]$ sudo spyder
>> sudo: spyder: command not found
>> [juniper@RTF_DEMO ~]$ spyder
>> -bash: spyder: command not found
>> [juniper@RTF_DEMO ~]$
>>
>>
>>
>> [juniper@RTF_DEMO ~]$ sudo pip install --upgrade spyder  --proxy 
>> http://10.12.240.99:8080/
>> Requirement already up-to-date: spyder in 
>> /usr/local/lib/python3.5/site-packages
>> Requirement already up-to-date: pyflakes in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: chardet>=2.0.0 in 
>> /usr/local/lib/python3.5/site-packages/chardet-3.0.4-py3.5.egg (from spyder)
>> Requirement already up-to-date: psutil in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pyqt5; python_version >= "3" in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: qtawesome>=0.4.1 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: nbconvert in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pylint in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pyzmq in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pickleshare in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: sphinx in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: numpydoc in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: jedi>=0.9.0 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: qtconsole>=4.2.0 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pyopengl; platform_system == "Linux" in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pygments>=2.0 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: rope>=0.10.5 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: qtpy>=1.2.0 in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: pycodestyle in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: cloudpickle in 
>> /usr/local/lib/python3.5/site-packages (from spyder)
>> Requirement already up-to-date: sip<4.20,>=4.19.4 in 
>> /usr/local/lib/python3.5/site-packages (from pyqt5; python_version >= 
>> "3"->spyder)
>> Requirement already up-to-date: six in 
>> /usr/local/lib/python3.5/site-packages/six-1.11.0-py3.5.egg (from 
>> qtawesome>=0.4.1->spyder)
>> Requirement already up-to-date: nbformat>=4.4 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: entrypoints>=0.2.2 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: mistune>=0.7.4 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: pandocfilters>=1.4.1 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: jupyter-core in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: traitlets>=4.2 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: jinja2 in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: bleach in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: testpath in 
>> /usr/local/lib/python3.5/site-packages (from nbconvert->spyder)
>> Requirement already up-to-date: mccabe in 
>> /usr/local/lib/python3.5/site-packages (from pylint->spyder)
>> Requirement already up-to-date: isort>=4.2.5 in 
>> /usr/local/lib/python3.5/site-packages (from pylint->spyder)
>> Requirement already up-to-date: astroid<2.0,>=1.6 in 
>> /usr/local/lib/python3.5/site-packages (from pylint->spyder)
>> Requirement already up-to-date: sphinxcontrib-websupport in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: docutils>=0.11 in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: imagesize in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: requests>=2.0.0 in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: alabaster<0.8,>=0.7 in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: babel!=2.0,>=1.3 in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: snowballstemmer>=1.1 in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: setuptools in 
>> /usr/local/lib/python3.5/site-packages (from sphinx->spyder)
>> Requirement already up-to-date: parso==0.1.1 in 
>> /usr/local/lib/python3.5/site-packages (from jedi>=0.9.0->spyder)
>> Requirement already up-to-date: ipython-genutils in 
>> /usr/local/lib/python3.5/site-packages (from qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: jupyter-client>=4.1 in 
>> /usr/local/lib/python3.5/site-packages (from qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: ipykernel>=4.1 in 
>> /usr/local/lib/python3.5/site-packages (from qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: jsonschema!=2.5.0,>=2.4 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> nbformat>=4.4->nbconvert->spyder)
>> Requirement already up-to-date: decorator in 
>> /usr/local/lib/python3.5/site-packages (from 
>> traitlets>=4.2->nbconvert->spyder)
>> Requirement already up-to-date: MarkupSafe>=0.23 in 
>> /usr/local/lib/python3.5/site-packages (from jinja2->nbconvert->spyder)
>> Requirement already up-to-date: 
>> html5lib!=1.0b1,!=1.0b2,!=1.0b3,!=1.0b4,!=1.0b5,!=1.0b6,!=1.0b7,!=1.0b8,>=0.99999999pre
>>  
>> in /usr/local/lib/python3.5/site-packages (from bleach->nbconvert->spyder)
>> Requirement already up-to-date: lazy-object-proxy in 
>> /usr/local/lib/python3.5/site-packages (from 
>> astroid<2.0,>=1.6->pylint->spyder)
>> Requirement already up-to-date: wrapt in 
>> /usr/local/lib/python3.5/site-packages (from 
>> astroid<2.0,>=1.6->pylint->spyder)
>> Requirement already up-to-date: urllib3<1.23,>=1.21.1 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> requests>=2.0.0->sphinx->spyder)
>> Requirement already up-to-date: certifi>=2017.4.17 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> requests>=2.0.0->sphinx->spyder)
>> Requirement already up-to-date: idna<2.7,>=2.5 in 
>> /usr/local/lib/python3.5/site-packages/idna-2.6-py3.5.egg (from 
>> requests>=2.0.0->sphinx->spyder)
>> Requirement already up-to-date: pytz>=0a in 
>> /usr/local/lib/python3.5/site-packages (from 
>> babel!=2.0,>=1.3->sphinx->spyder)
>> Requirement already up-to-date: python-dateutil>=2.1 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> jupyter-client>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: tornado>=4.1 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> jupyter-client>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: ipython>=4.0.0 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: webencodings in 
>> /usr/local/lib/python3.5/site-packages (from 
>> html5lib!=1.0b1,!=1.0b2,!=1.0b3,!=1.0b4,!=1.0b5,!=1.0b6,!=1.0b7,!=1.0b8,>=0.99999999pre->bleach->nbconvert->spyder)
>> Requirement already up-to-date: pexpect; sys_platform != "win32" in 
>> /usr/local/lib/python3.5/site-packages (from 
>> ipython>=4.0.0->ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: prompt-toolkit<2.0.0,>=1.0.4 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> ipython>=4.0.0->ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: simplegeneric>0.8 in 
>> /usr/local/lib/python3.5/site-packages (from 
>> ipython>=4.0.0->ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: ptyprocess>=0.5 in 
>> /usr/local/lib/python3.5/site-packages (from pexpect; sys_platform != 
>> "win32"->ipython>=4.0.0->ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> Requirement already up-to-date: wcwidth in 
>> /usr/local/lib/python3.5/site-packages (from 
>> prompt-toolkit<2.0.0,>=1.0.4->ipython>=4.0.0->ipykernel>=4.1->qtconsole>=4.2.0->spyder)
>> [juniper@RTF_DEMO ~]$
>>
>>

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