[Python知识库]python学习第一天

python学习第一天

1、小游戏

import random

while True:
    user = int(input("用户请出拳（0：退出游戏，1：石头，2：剪刀，3：布）"))
    if user == 1 or user == 2 or user == 3:
        pass

    elif user == 0:
        print("game over")
        break
    else:
        print("请从新出拳必须是1，2或者3")
        continue

    computer = random.randint(1, 3)
    print("user:", user, "computer:", computer)

    if user == computer:
        print("平局")
    elif (user == 3 and computer == 1) or (user == 2 and computer == 3) or (user == 1 and computer == 2):
        print("用户赢")
    else:
        print("电脑赢")

2、for循环

big="adasdad1"
for i in big:
    print(i)
for index,i in enumerate(big):
    if i=="a":
        continue
        print(index,1)
    print(i,end=",")

3、while循环

#
# i = 0
# while i < 4:
#    print(i + 1, "吃苹果")
#    j = 1
#    while j <= 4:
#          print(j, "吃橘子")
#          if j == 2:
#              print("我吃饱了")
#              break
#          j += 1
#    i += 1
#
#
# i = 1
# while i <= 4:
#     if i == 3:
#         i += 1
#         continue
#     print(f"吃{i}个苹果")
#     i += 1
#
# print("===========")
# str="python"
# j = 0
# while j <6:
#     if j == 1 or j ==4:
#         print(str[j])
#     j += 1
#
#
# for i in  "aaaa":
#     if i =="m":
#         continue
#     print(i,end=' ')



for i in range(1,6):
    print("*" * i)

for i in range(1,6):
    if i % 2 == 1:
        print("*" * i)