global

KeywordPython 2.0+Intermediate

Declares a variable inside a function as belonging to the global scope

Quick Info

Documentation
Official Docs
Python Version
2.0+

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Intermediate2 examples
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Quick Example

python
count = 0

def increment():
    global count
    count += 1

increment()
increment()
increment()
print(f"Count: {count}")

# Without global, assignment creates a local variable
x = "global"
def no_global():
    x = "local"  # creates a new local x
    print(f"Inside: {x}")

no_global()
print(f"Outside: {x}")

Without 'global', assigning to a variable inside a function creates a local variable. 'global' tells Python to use the module-level variable instead.

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Tags

languagesyntaxcorescopevariable

Related Items

nonlocal
Keyword
Declares a variable inside a nested function as belonging to the enclosing scope
def
Keyword
Defines a new function or method