python核心编程第二版习题2-11

 

#!/usr/bin/env python
def addFiveNum():
        print('Enter five number')
        s = 0
        v = []
        for i in range(5):
                a = raw_input('n%d:' % (i+1))
                v.extend([int(a)])
                s += v[i]
        return s
def avgFiveNum():
        a = float(addFiveNum())/len(range(5))
        return a
F = '-'
print('%s\n\t%s\n\t%s\n\t%s\n%s' % (F*20,'1.add five num','2.avg of five num','X.exit',F*20))
j = 1
while j:
        chose = raw_input('Enter your chose(1,2 or X):')
        if str(chose) == 'X':
                j = 0
                break
        elif int(chose) == 1:
                print (addFiveNum())
        elif int(chose) == 2:
                print (avgFiveNum())
        else:
                print('Error')