一 for循环
(1)
for i in range(10):
print("loop",i)
(2)
for i in range(0,10,2):
print("loop",i)
二 while 循环
(1)
count = 0
while (count < 9):
print 'The count is:', count
count = count + 1
print "Good bye!"
(2)
count = 10
while count >= 5:
print (count, " 大于或等于 5")
count = count - 1
else:
print (count, " 小于5,退出")
Python 不支持 do〜while 语法、可以使用 while(无限循环)和 break 组合起来实现 do ~ while 语法