CODEWITHSUNDEEP
pythonmethodsconstants
Bowser
Bowser

Reputation: 397

Python - using a method's return value as a constant

I am trying to define some constants at the top of my file. There are no classes in the file, just imports, constants, and methods. Possibly due to poor design, I want to use a method inside of this file to set a constant. For example:

MY_CONSTANT = function(foo, bar)

def function(foo, bar):
    return 6

In this example, I want MY_CONSTANT to get assigned the int 6. This is a simplified version of the problem, as my function actually makes many expensive calls and I only want that function to be called once. I plan to use the constant inside of a loop.

This does not work because I get the following error: 

NameError: name 'function' is not defined

Is there a better design for this, or how can I use a method call to set my constant?

Upvotes: 0

Views: 2177

Answers (1)

MrAlexBailey
MrAlexBailey

Reputation: 5289

You are trying to call a function before it has been defined:

def function(foo, bar):
    return 6

MY_CONSTANT = function(foo=None, bar=None)

>>>MY_CONSTANT
6

Edit: I set foo=None and bar=None going into function because I'm not sure where you have those defined either.

Upvotes: 2

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