Unable to run coverage tool using embedded python using the -m option or when copied to different path locations in windows

[gourish2k]

I am trying to run the python coverage tool using embedded python downloaded from https://www.python.org/ftp/python/3.6.1/python-3.6.1-embed-amd64.zip
The following are the steps I followed to run a test code using coverage module.

1. After downloading python-3.6.1-embed-amd64.zip, I uncompress the files to D:\some_directory\python-3.6.1-embed-amd64

2. cd python-3.6.1-embed-amd64

3. python get-pip.py

4. python -mpip install coverage

5. python-3.6.1-embed-amd64\python36._pth is changed to

    python36.zip
    Lib\site-packages
    .
    # Uncomment to run site.main() automatically
    #import site

6. In case if there is an internet proxy to used then use the following command

   SET HTTP_PROXY=http://username:password@proxy_ip:proxy_port

7. python -mpip install coverage

Create test files as follows

The file module_prog.py is as follows

# -*- coding: utf-8 -*-
"""
    Dummy method for testing
"""


def method_to_tested() -> None:
    """
    Method To be tested
    """
    print("Called method to be tested")

The file test_module.py is as follows

""" Unit test script for testing File : test_module.py
"""

import unittest
from module_prog import method_to_tested


class TestMethods(unittest.TestCase):
    """ Testing the methods """

    def test_method_to_tested(self):
        method_to_tested()

if __name__ == "__main__":
    unittest.main(warnings='ignore')

8. I run the following

    D:\some_directory\python-3.6.1-embed-amd64>python test_module.py

    Called method to be tested
    .
    ----------------------------------------------------------------------
    Ran 1 test in 0.000s

    OK

9. But if I run the instruction as mentioned below using converage I get the following error.

    D:\some_directory\python-3.6.1-embed-amd64>python -mcoverage run test_module.py

    Traceback (most recent call last):
      File "test_module.py", line 4, in <module>
        import unittest
    ModuleNotFoundError: No module named 'unittest'

If I run the command

  Scripts\converage.exe run test_module.py

Then coverage run successfully,
But if I move the embedded python to another directory and try to run the same command as above then I get the following error

D:\some_other_directory\python-3.6.1-embed-amd64>Scripts\coverage.exe run test_module.py

Fatal error in launcher: Unable to create process using 
'"d:\some_directory\python-3.6.1-embed-amd64\python.exe" "D:\some_other_directory\python-3.6.1-embed-amd64\Scripts\coverage.exe" run test_module.py'

How can I make coverage run as a python module in case the python is embedded python

[nedbat]

It doesn't make sense to me that coverage wouldn't be able to import unittest.

You ask how to make coverage run as a module, but you are already doing that: python -m coverage.

Before your "import unittest" line, add this: import sys, pprint; pprint.pprint(sys.path). Then run it both ways, and let's compare the output.

Also, BTW, you don;'t need to use unittest.main() at all, you can run unittest as: python -m unittest discover.

[gourish2k]

Thank you for you reply, and sorry for my late reply

I think my question is not clear, let give a more precise explanation
I know as how to run coverage as a module as I have given in the example, but when I try to run it as a module using the embedded python as mentioned above I am getting the error which is specified.

I also forgot to mention that when the original coverage tool installation was done the directory name was some_directory, that is python was at location d:\some_directory\python-3.6.1-embed-amd64\python.exe but afterwards I have renamed the directory name to some_other_directory, thus the python was at location D:\some_other_directory\python-3.6.1-embed-amd642.
The reason why I was doing this because since I am using embedded python I expected that the installed tools and packages should run from any locations from where the embedded python is copied.

If I run the coverage tool when the directory is some_directory then the coverage tools runs properly. But not in case when I rename the directory to some_other_directory

I have put the line of code import sys; print(sys.path) and following are the results which I get. I did not have pprint in my installation thus I have used the print statement, however let me know if its precisely required so that I can install and use it. Please note that the test is with directory name changed that is some_other_directory

case 1, running coverage as a module

D:\some_other_directory\python-3.6.1-embed-amd642>python -mcoverage run test_module.py

['D:\\some_other_directory\\python-3.6.1-embed-amd642', 'D:\\some_other_directory\\python-3.6.1-embed-amd642\\Lib\\site-packages', 'D:\\some_other_directory\\python-3.6.1-embed-amd642']
Traceback (most recent call last):
  File "test_module.py", line 4, in <module>
    import unittest
ModuleNotFoundError: No module named 'unittest'

case 2, running coverage tool

D:\some_other_directory\python-3.6.1-embed-amd642>Scripts\coverage.exe run test_module
.py
Fatal error in launcher: Unable to create process using '"d:\some_directory\python-3.6.1-embed-amd64\python.exe" "D:\some_other_directory\python-3.6.1-embed-amd642\Scripts\coverage.exe" run test_module.py'

Also, BTW, you don;'t need to use unittest.main() at all, you can run unittest as: python -m unittest discover.

Apparently my main objective was to run the coverage tool on the unittest which are already defined, thus I am using the above command unittest.main() in the code, but if I use the instruction python -m unittest discover then I may not be able to use the coverage tool.