How to access global variable in Python
Variables that are created outside a function are known as global variables. Global variables can be used by everyone, both inside of functions and outside.
To access a global variable inside a function there is no need to use global keyword.
# global variable
a = 2
b = 9
def mul():
c = a * b
return c
print("{} * {} = {}".format(a, b, mul()))
Output:
2 * 9 = 18
Using global keyword:
a = 20
def modify():
# declare a global keyword
global a
a = a + 12
print("The value of a inside a function: ", a)
modify()
print("The value of a outside a function: ", a)
Output:
The value of a inside a function: 32 The value of a outside a function: 32
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