第五节 python控制流

IF语句

#!/usr/bin/python
#Filename e:break.py
number =23
guess = int(raw_input('Enter an interger:'))
if guess == number:
    print 'Congratulations, you guessed it.'
    print "(but you do not win any prizes!)"
elif guess<number:
    print 'No, it is a little higher than that'
else:
    print 'No, it is a little lower than that'
print 'Done'

For循环

#for i in range(1,5):
rang = [1,2,3]
for i in rang:
    print i;
print "loop is over"
   

While循环，breaak语句，continue语句

while True:
    s = raw_input('Enter something:')
    if s == 'quit':
        print 'byebye'
        break
    if len(s)<3:
        continue
    print 'Input is of sufficient length'