how to write use global in python code example

Example 1: global in python

a = 'this is a global variable'
def yourFunction(arg):
    #you need to declare a global variable, otherwise an error
    global a
    return a.split(' ')

Example 2: global in python

x = 5

def foo():
    global x = 10
    print("local x:", x)


foo()
print("global x:", x)