python modify global variables

pi=3.141
e=2.718
def func():    global pi     pi=3.14     print('global pi=',pi)     e=2.71     print('local e= ',e) print(pi) print(e) func() print(pi)#This print is a 3.14 local variable print(e)#This print is a 2.718 global variable #If you want to modify a global variable, declare it as a global variable in the function and then assign it to modify it