CODEWITHSUNDEEP
pythonpython-2.7global
Raju Ahmed Shetu
Raju Ahmed Shetu

Reputation: 134

Value Changes in python with Context Changes

I have a project with folder structure like this:

MainFolder/
    __init__.py
    Global.py
    main.py
Drivers/
    __init__.py
    a.py
    b.py

In Global.py I have declared like this:

#in Global.py file
global_value=''

Now when I tried the below script: 

#in main.py
import Global
from Drivers import a
Global.global_value=5
a.print_value()

In a.py file

from MainFolder import Global
def print_value():
    print Global.global_value

The output supposed to be like this:

5

But all I am getting is :

''

Anyone with this solution what happens when context changes??

Upvotes: 0

Views: 83

Answers (1)

Sazid
Sazid

Reputation: 2827

In my opinion you should not do that. To have some form of common value, write the value to a file/db and then fetch the value from that file.

If that doesn't suite the needs, here's some resources I found, might help you out:

I've not tested this, but this one should work (fetched from Import a module from a relative path)

 import os, sys, inspect
 # realpath() will make your script run, even if you symlink it :)
 cmd_folder = os.path.realpath(os.path.abspath(os.path.split(inspect.getfile( inspect.currentframe() ))[0]))
 if cmd_folder not in sys.path:
     sys.path.insert(0, cmd_folder)

 # use this if you want to include modules from a subfolder
 cmd_subfolder = os.path.realpath(os.path.abspath(os.path.join(os.path.split(inspect.getfile( inspect.currentframe() ))[0],"subfolder")))
 if cmd_subfolder not in sys.path:
     sys.path.insert(0, cmd_subfolder)

 # Info:
 # cmd_folder = os.path.dirname(os.path.abspath(__file__)) # DO NOT USE __file__ !!!
 # __file__ fails if script is called in different ways on Windows
 # __file__ fails if someone does os.chdir() before
 # sys.argv[0] also fails because it doesn't not always contains the path

More:

Upvotes: 1

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