习题33 while循环

i = 0numbers = []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" % iprint "The numbers: "for num in numbers:    print num

这个程序并不难，需要知道的就是第一块里面的 append(i) 是为了给 numbers 加数字用的

第二节的 for 更不用说了，就是输出 numbers 里面的数字而已

运行结果如下：

=====================================================================================

附加练习：

1-4 参考

i = 0print "Input a for 'while i < a': "a = int(raw_input("> "))print "Input b for 'i = i + b': "b = int(raw_input("> "))numbers = []while i < a:    print "At the top i is %d" % i    numbers.append(i)        i = i + b     print "Numbers now: ", numbers    print "At the bottom i is %d" % iprint "The numbers: "for num in numbers:    print num

运行结果

5.

i = 0print "Input a for 'i in range(0,a)': "a = int(raw_input("> "))#print "Input b for 'i = i + b': "#b = int(raw_input("> "))numbers = []for i in range(0,a):    print "At the top i is %d" % i    numbers.append(i)     #   i = i + b     print "Numbers now: ", numbers    print "At the bottom i is %d" % iprint "The numbers: "for num in numbers:    print num

运行结果：

现在试一试去掉注释中的 i = i + b

结果就不贴了，好像没什么区别