while用起来不如for安全。
i = 0 numbers = [] while i < 6: print "At the top i is %d" % i numbers.append(i) i = i + 1 print "Numbers now: ", numbers print "At the bottom i is %d" % i print "The numbers: " for num in numbers: print num
原文：http://www.cnblogs.com/hluo/p/4049850.html