"""Compute the area/circumference of a circle"""

def area2(radius) :

def circumference(radius) :

    return 2 * math.pi * radius

1. here's how to return multiple values from a function:

def area_circ(radius) :

    return area1(radius), circumference(radius)

if __name__ == _{_main_} :

    area, circumference = area_circ(1)
    print area, circumference

(:source lang=python:)

(:source lang=java:)

"""Compute the area of a circle"""

import math

1. compare this version of area computation

def area1(radius) :

    temp = math.pi * radius**2
    return temp

1. this one:

def area1(radius) :

    return math.pi * radius**2

1. the latter is more concise, while the former may be easier
2. to debug

(:sourceend:)