# 使用while和for循环分别打印字符串s=’asdfer’中每个元素。
# s = "asdfer"
#
# for i in s:
# print(i)
#
# i = 0
# while i < len(s):
# print(s[i])
# i += 1
# 如：content = input(‘请输入内容:’) # 如用户输入：5+9或5+ 9或5 + 9，然后进行分割再进行计算。
# sum = 0
# content = input('<<<')
#
# # index = content.find("+")
# # a = int(content[0:index])
# # b = int(content[index + 1:])
# # print(a + b)
# for i in content.split("+"):
# sum += int(i)
# print(sum)
# 任意输入一串文字+数字 统计出来数字的个数
# s = input("<<<")
# num = 0
# for i in s:
# if i.isdigit():
# num += 1
# print(num)
# # 循环录入字符串
1 # # allthing = ['123']
2 # # right = 'q'
3 # # while 1:
4 # # add = input('你想输入什么(q退出): ')
5 # # if add.lower() == 'q'.lower():
6 # # break
7 # # else:
8 # # allthing.append(add)
9 # # print(allthing)
# 打印列表中列表的元素（列表中还有列表）
1 li = [1, 2, 3, 5, 'alex', [2, 3, 4, 5, 'taibai'], 'afds']
2 for i in li:
3 if type(i) == list:
4 for j in i:
5 print(j)
6 else:
7 print(i)
8
9 for i in range(len(li)):
10 if type(li[i]) == list:
11 for j in li[i]:
12 print(j)
13 else:
14 print(li[i])
# 计算 1 - 2 + 3 ... + 99 中除了88以外所有数的总和
# i = 0
# sum = 0
# while i < 99:
# i += 1
# if i == 88:
# continue
# elif i % 2 != 0:
# sum += i
# else:
# sum -= i
#
# print(sum)
# 计算 1 - 2 + 3 ... -99 中除了88意外所有数的总和
1 i = 0
2 j = -1
3 sum = 0
4 while i < 99:
5 i += 1
6 if i == 88:
7 continue
8 else:
9 j *= -1
10 sum += i * j
11 print(sum)
# ⽤户登陆（三次输错机会）
# 且每次输错误时显示剩余错误次数（提示：使⽤字符串格式化）
1 un = 0 # 记录帐号输错的次数
2 up = 0 # 记录密码输错的次数
3 state = True # 程序当前状态
4 username = 'admin'
5 password = '123456'
6
7 while state:
8 input_username = input("Please input your username(you still have %d times): "%(3 - un))
9 if input_username == username:
10 input_password = input("Please input your password(you still have %d times): " %(3 - up))
11 if input_password == password:
12 print('Loading successfully.')
13 else:
14 up += 1
15 if up == 3:
16 print("Your ID was locked.")
17 break
18 else:
19 print("Your password is error, please check it then input again: ")
20 else:
21 un += 1
22 if un == 3:
23 print("Your ID was locked.")
24 break
25 else:
26 print("Your username is error, please check it then input again: ")
# 循环录入，接收到退出按键退出
1 allthing = ['123']
2 right = 'q'
3 while 1:
4 add = input('你想输入什么(q退出): ')
5 if add.lower() == 'q'.lower():
6 break
7 else:
8 allthing.append(add)
9 print(allthing)
# 查找列表li中的元素，移除每个元素的空格，
# 并找出以’A’或者’a’开头，并以’c’结尾的所有元素，
# 并添加到一个新列表中,最后循环打印这个新列表。
1 li = ['taibai ', 'alexC', 'AbC ', 'egon', ' Ritian', ' Wusir', ' aqc']
2 b = []
3 # for i in li:
4 # s = i.strip()
5 # if (s.startswith("A") or s.startswith('a')) and s.endswith('c'):
6 # b.append(s)
7 # for i in b:
8 # print(i)
9 # for i in li:
10 # s = i.strip()
11 # if s[0].upper() == 'A' and s[-1] == "c":
12 # b.append(s)
13 # for i in b:
14 # print(i)
# 开发敏感词语过滤程序，提示用户输入评论内容，如果用户输入的内容中包含特殊的字符：
# 敏感词列表 li = ["苍老师","东京热",”武藤兰”,”波多野结衣”]
# 则将用户输入的内容中的敏感词汇替换成***，并添加到一个列表中；
# 如果用户输入的内容没有敏感词汇，则直接添加到上述的列表中。
# li=["苍老师","东京热","武藤兰","波多野结衣"]
# new_li= []
# info = input("评论") # 苍老师，东京热 法律框架第三
# for i in li:
# if i in info:
# l = len(i)
# info=info.replace(i,'*'*l)
# new_li.append(info)
# print(new_li)
# print("Welcome！ -1 exit the program")
# li = ["苍老师", "东京热", "武藤兰", "波多野结衣"]
# b = []
# l = 0
# while 1:
# sensitive = input("<<<")
# if sensitive == "-1":
# break
# if sensitive in li:
# l = len(sensitive)
# sensitive = sensitive.replace(sensitive, "*" * l)
# b.append(sensitive)
# print(b)
# 重要 计算输入字符串中数字团的个数
1 # fhdklah123rfdj12fdjsl3 ' 123 12 13'
2
3 # info = input('>>>').strip()
4 # for i in info:
5 # if i.isalpha():
6 # info = info.replace(i," ")
7 # l = info.split()
8 # print(len(l))
9
10 # 升级版
11 s = input('<<<')
12 for i in s:
13 if not(i.isdigit()):
14 s = s.replace(i, ' ')
15 s = s.split()
16 print(len(s))
