How to use a global variable in function

Question

How do I create or use a global variable in function?

Is it necessary to store the global variable in a local variable of the function which needs its access?

Answer 1

The global variable can be used in other functions by declaring it as global in each function that assigns to it.

It can be used as such :

globvar = 0

def set_globvar_to_one():
    global globvar    
    globvar = 1

def print_globvar():
    print(globvar)     

set_globvar_to_one()
print_globvar()