Hello Python

def square(x):
    return x * x

def make_add(x):
    def f(y):
        return x + y
    return f

def make_add_lambda(x):
    return lambda y: x + y

agile@COM:~/Desktop$ python -i o.py
>>> square(2)
4
>>> make_add3 = make_add(3)
>>> make_add3(5)
8
>>>