CODEWITHSUNDEEP
python-3.x
Elessar
Elessar

Reputation: 37

Python-Local Scope and Global Scope

stored=0
def store(arg):
    stored=arg
    return stored
y=store(22)
print(y)
print(stored)

Output:

22
0

I really want to understand why print(stored)is not equal to 22.Thank you so much.

Upvotes: 0

Views: 163

Answers (1)

Dimitris Fasarakis Hilliard
Dimitris Fasarakis Hilliard

Reputation: 160377

Because the function isn't altering stored that's located in the global scope. It is creating a local variable stored inside the function, assigning a value to it and returning it. The assignment affects the local stored, it doesn't touch the global stored.

You can make it refer to the global stored by using the global statement:

def store(arg):
    global stored
    stored = arg
    return stored

Adding the global <var_name> statement tells Python that stored is referring to a name that exists in the global scope; any assignments/modifications to stored inside the function store will now alter the corresponding name in the global scope.

Upvotes: 1

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