CODEWITHSUNDEEP
pythonglobal-variablespackage
Nate Thompson
Nate Thompson

Reputation: 635

How to use global variables within python package

I have several python functions that I am trying to create into a package. Each function exists in its own python file, and uses global variables to return some objects back to the global environment , some of which get used by the other python functions.

When these functions are standalone functions that have been defined in the python console, they work just fine, but when I put them all together into a python package, the global variables are not being returned as a global variable any longer.

Why do functions that are defined with a package file not return global variables / how can I bypass this?

A very simple example:

python_function1.py

def function1(x):
    global new_table
    new_table = x

python_function2.py

def function2(new_table):
    global new_table2
    new_table2 = new_table

Upvotes: 0

Views: 1625

Answers (1)

Pauloba
Pauloba

Reputation: 564

As per documentation states:

The canonical way to share information across modules within a single program is to create a special module (often called config or cfg). Just import the config module in all modules of your application; the module then becomes available as a global name. Because there is only one instance of each module, any changes made to the module object get reflected everywhere.

You can check this documentation for example code:

https://docs.python.org/3/faq/programming.html#how-do-i-share-global-variables-across-modules

Upvotes: 5

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