250328function

def a(): # function must return something
    x = 10# 4 spaces
    y = 2
    print(x,y)
print(a)
a()
print(a())

def a(x,y): # @1.5 x = 1 y = 2
    x = x + y
    print(x,y)
#    return x # return None
    return [x,y]
print(a)
print(a(1,2)+ a(3,4))

def a(x,y): # @1.5 x = 1 y = 2
    x = x + y
    print(x,y)
    return x # return None
#    return [x,y]
print(a)
print(a(1,2)+ a(3,4)+a(5,6))
print(a(1,2)+ b(3,4)+a(5,6))