1 i = 0 2 numbers = [] 3 4 while i < 6: 5 print "At the top i is %d" % i 6 numbers.append(i) 7 8 i = i + 1 9 print "Numbers now: ", numbers 10 print "At the bottom i is %d" % i 11 12 13 print "The numbers:" 14 15 for num in numbers: 16 print num
while循环跟if类似，但区别在于重复进行，直到while表达式为False为止。
例如：i < 6，那么的6的时候就变成false，这时候就停止打印
原文：http://www.cnblogs.com/LevenLau/p/6380153.html