Global var editing from another script in Python

Question

I'm trying to increment a python global var from another script, but it doesn't seem to be updating. Am I doing something wrong here?

I run func() multiple times during the script execution and it never seems to update globVal

script 1:

def func():
    from script2 import globVal
    global globVal
    print "glob val is " + str(globVal)
    globVal = globVal + 1

script 2 (different file):

global globVal
globVal = 1

Once you have found an answer which works for you, please click the tick next to that answer to accept it. This lets other people with your problem know which solution worked for you. — Adi219
– Adi219, Commented Aug 18, 2017 at 19:39
FYI, global variables are seldom used in practice. You should encapsulate them when possible. docs.quantifiedcode.com/python-anti-patterns/maintainability/… and wiki.c2.com/?GlobalVariablesAreBad — Alexander
– Alexander, Commented Aug 18, 2017 at 19:43
You should note that when you import globVal and declare it as global, it will take precedence over an existing globVal, if there is such variable. You may want to forgo the func function entirely, as well as the global declarations. — Zach Gates
– Zach Gates, Commented Aug 18, 2017 at 19:43

Adi219 · Accepted Answer · 2017-08-18 19:37:03Z

5

Yes, you are doing something wrong (answering your first question)

You should move from script2 import globVal to the top of script2 as that value is being imported each time as 1. After moving the import to the top, the globVal variable should update.

answered Aug 18, 2017 at 19:37

Adi219

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1 Comment

user1022585 Over a year ago

Thanks, that fixed it.

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