Using global variables in a function

Question

In a function, How to create and use a global variable? How can I use it in other functions? Is it compulsory to store the value of global variable in a local variable to use it in a function? Select the correct answer from above options

Answer 1

If you want to refer to a global variable in a function you have to use the “global” keyword: Ex- gvar=1 #you need to refer to global to modify the value def set_gvar(): global gvar gvar = 2 #no need to declare global to read value def print_gvar(): print(gvar) set_gvar() print_glvar() # prints 2 The main reason for using the “global “ keyword is to make Python sure that you know what you are dealing with and not mistaking it with a local variable. If “global” keyword is not mentioned, Python will implicitly declare it as local. Hope this answer helps!