Globals between modules ?

[PGMoscatt]

Does Python allow a 'global' variable that can be used between different
modules used within an app ?

Pete

 

[Roy Smith]

Does Python allow a 'global' variable that can be used between different
modules used within an app ?

Pete

You could explicitly import __main__ and use that as a global namespace
(see example below). Or (perhaps a better idea), you could have a module
dedicated to global storage, and import that in all your other modules
instead of importing __main__.

---------------------------------
Roy-Smiths-Computerlay$ cat global.py
#!/usr/bin/env python

import a
import b

a.set()
print "x = %s" % x
print "b.get() = %s" % b.get()
---------------------------------
Roy-Smiths-Computerlay$ cat a.py
import __main__

def set():
__main__.x = "hello"
---------------------------------
Roy-Smiths-Computerlay$ cat b.py
import __main__

def get():
return __main__.x

 

[PGMoscatt]

You could explicitly import __main__ and use that as a global namespace
(see example below). Or (perhaps a better idea), you could have a module
dedicated to global storage, and import that in all your other modules
instead of importing __main__.

---------------------------------
Roy-Smiths-Computerlay$ cat global.py
#!/usr/bin/env python

import a
import b

a.set()
print "x = %s" % x
print "b.get() = %s" % b.get()
---------------------------------
Roy-Smiths-Computerlay$ cat a.py
import __main__

def set():
__main__.x = "hello"
---------------------------------
Roy-Smiths-Computerlay$ cat b.py
import __main__

def get():
return __main__.x

Thanks Roy.... yep, that makes sense.

Thanks again.

Pete