CODEWITHSUNDEEP
pythonfunctionvariablesglobal
Neoking
Neoking

Reputation: 21

Best way to change value of global value inside a function in Python?

I work a lot with a lot of global variables in Python which value constantly need to be changed when my code progresses. A very fine solution for me would be to take a global variable as an argument inside a function, however, as far as my knowledge reaches, it is only possible to change a global variable inside a function by actually naming that specific variable during the function definition. Because I work with a lot of different variablenames, this would force me to make a lot of functions per variablename.

What I want is something like this:

x = 5

def foo(_):
    global _
    
    _ = 10
    
    return _
    
foo(x)

print(x)

where x now would be 10 instead of the actual output, which is 5. What is the most efficient way to reach what I want?

Upvotes: 0

Views: 413

Answers (2)

anurag
anurag

Reputation: 1942

I may not have completely understood your need to do this, but, you can also manage globals as follows:

x = globals()
x['cartoon'] = 'mickey'
print(x['cartoon'])

Upvotes: 0

quamrana
quamrana

Reputation: 39404

Since you go to the trouble of naming x when you call foo(x), its not too much of a stretch to do x = foo(x):

x = 5

def foo(_):
    _ = 10
    return _
    
x = foo(x)

print(x)

Upvotes: 1

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