setting working directory in pycharm

[snippsat]

I think you are mixing stuff together,what you do in first post is make a package.

Is there any way to change the working directory in Pycharm itself,instead of code level,as I need the code to work through both cmd and pycharm

To make a folder that Python find wherever you in PyCharm or command line,
add that folder to sys.path(this is where Python search for .py files).

I find it easiest to not mess with PYTHONPATH for adding own folders permanently.
The site module offers a method that takes care of adding to sys.path without duplicates and .pth files.
Make a sitecustomize.py file in C:\Python37\Lib\site-packages or your site-packages folder.

# sitecustomize.py
import site

site.addsitedir(r'E:\div_code')

Test that it work.

C:\
λ ptpython
>>> import sys
>>> from pprint import pprint

>>> pprint(sys.path)
['C:\\python37\\Scripts\\ptpython.exe',
 'c:\\python37\\python37.zip',
 'c:\\python37\\DLLs',
 'c:\\python37\\lib',
 'c:\\python37',
 'c:\\python37\\lib\\site-packages',
 'E:\\div_code'] <----

For OS and Path look at Python 3.6/3.7 and pip installation under Windows

Now if a package(your first code) is placed eg in E:\div_code,then python will find it.