while简单循环
i = 1
while i <= 5:
print('啦啦啦啦')
i += 1
和C语言也一样形式。同样的思路,i加1后又回到while判断。如果没有i += 1,程序将会死循环。
对于猜拳游戏,while:
import random
while True:
player = int(input('请出拳: 0--石头;1--剪刀;2--布: '))
computer = random.randint(0, 2)
if((player == 0) and (computer == 1) or (player == 1) and (computer ==2) or (player == 2) and (computer == 0)):
print('玩家获胜')
elif player == computer:
print('平局')
else:
print('电脑获胜')
while嵌套
假设操场跑五圈,一圈做三个俯卧撑
i = 0
while i < 5:
j = 0
print('操场跑圈中。。。。。。')
while j < 3:
print('做一个俯卧撑')
j += 1
i += 1
补一下if elif结构
if后一个条件,elif后1不成立,判断第二个条件,else后前两个都不行,执行else后条件
if else结构
if后如=如果不成立,执行else后的条件



