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"""
python中的else if语句使用的是elif, python中并没有switch
if语句的嵌套
"""
score = 80
if score >= 90:
print("优")
elif score >= 80:
print("良")
elif score >= 60:
print("合格")
else:
print("差")
daoLength = 10
ticket = 1
if daoLength <= 10:
print("你可以进入火车站")
if ticket == 1:
print("你有车票可以上车")
else:
print("请买票后再上车")
else:
print("你携带管制刀具，禁止上车")
"""
while循环的使用和应用
"""
i = 0
while i < 5:
print("媳妇，我错了")
i += 1
x = 1
result_x = 0
while x <= 100:
result_x += x
x += 1
print("1-100的和总共为：%d" % result_x)
y = 1
result_y = 0
while y <= 100:
if y % 2 == 0:
result_y += y
y += 1
print("1-100的偶数和总共为：%d" % result_y)
"""
while循环的嵌套，打印三角形
"""
z = 1
while z <= 5:
colum = 1
while colum <= z:
print("*", end=" ")
colum += 1
print()
z += 1
"""
while循环的嵌套，打印九九乘法表
多个占位符的表达方式： "%d + %d = %d" % (1,2,(1*2))
%-2d,两位数左对齐， %2d两位数右对齐， 保持层次对齐
"""
row = 1
max = 9
while row <= max:
colum = 1
while colum <= row:
print("%d*%d=%-2d" % (colum, row, (colum * row)), end=" ")
colum += 1
print()
row += 1
"""
if语句猜拳游戏
random模块产生随机数, randint(0,2)相当于区间[0,2]
"""
import random
will_continue = True
while will_continue:
player = int(input("请输入： 剪刀（0） 石头（1） 布（2）："))
computer = random.randint(0,2)
print("player: %s, computer: %d, type = %s" %(player,computer,type(player)) )
# 以用户为第一视角： 胜 平 负
if (player == 0 and computer == 2) \
or (player == 1 and computer == 0) \
or (player == 2 and computer == 1):
print("你赢了")
elif player == computer:
print("平局")
else:
print("你输了")
if input("继续请按(y): ") == "y":
will_continue = True
else:
will_continue = False