Python – How to use a global variable in a function

In Python, we can use a global keyword to referring a global variable.

1. Review the below example :

a = 10

def updateGlobal():
    a = 5

updateGlobal()
print(a)  # 10

Output – It will return a 10, instead of 5.

10

2. To modify the global variable “a”, add a global keyword like this :

a = 10

def updateGlobal():
    global a
    a = 5

updateGlobal()
print(a)  # 5

Output

5

References

1. Python docs – global