modvar = 0

def globalmodvar():
    print('globalmodvar()')
    global modvar
    modvar = 1

def localmodvar():
    print('localmodvar()')
    modvar = 2

print("Modvar is :", modvar)

localmodvar()
print("Modvar is :", modvar)

globalmodvar()
print("Modvar is :", modvar)


def outer():
    var = 'unchanged'

    def inner1():
        print('inner1()')
        var = 'changed by inner1'

    def inner2():
        print('inner2()')
        nonlocal var
        var = 'changed by inner2'

    print('var is:', var)

    inner1()
    print('var is:', var)

    inner2()
    print('var is:', var)

outer()