python 列表、字典、元组、字符串之间的转换

• python 中字符串、元组、字典、列表之间的转换

• dictionary

  $ pythonPython 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609] on linuxType "help", "copyright", "credits" or "license" for more information.>>> dict = {'name':'eric', 'age':18, 'job':'writer'}>>> #dict --- str... print (type(str(dict))), str(dict)<class 'str'>(None, "{'age': 18, 'job': 'writer', 'name': 'eric'}")>>> #dict --- tuple... print (tuple(dict))('age', 'job', 'name')>>> #dict --- list... print (list(dict))['age', 'job', 'name']>>> 

• list: 不能转换成dictionary

  $ pythonPython 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609] on linuxType "help", "copyright", "credits" or "license" for more information.>>> lis = ['hey', 'are' ,'you' ,'ok']>>> #list --- str... print (str(lis))['hey', 'are', 'you', 'ok']>>> #list --- tuple... print (tuple(lis))('hey', 'are', 'you', 'ok')>>> 

• string

  $ pythonPython 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609] on linuxType "help", "copyright", "credits" or "license" for more information.>>> str = '123qwe'>>> #str --- tuple... print (tuple(str))('1', '2', '3', 'q', 'w', 'e')>>> #str --- list... print (list(str))['1', '2', '3', 'q', 'w', 'e']>>> #str 到dic转换 需要满足一定格式：>>> print (type(eval("{'name':'eric', 'age':18}"))),(eval("{'name':'eric', 'age':18}"))<class 'dict'>(None, {'name': 'eric', 'age': 18})>>> 

• tuple

  $ python Python 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609] on linuxType "help", "copyright", "credits" or "license" for more information.>>> tup = (1, 2, 3, 'a', 's', 'd') >>> #tuple --- string just all the tuple's elements are string type>>> print (' '.join(tup))Traceback (most recent call last):File "<stdin>", line 1, in <module>TypeError: sequence item 0: expected str instance, int found>>> tup = ('1', '2', '3', 'a', 's', 'd')>>> print (' '.join(tup))1 2 3 a s d>>> print (''.join(tup))123asd>>> #tuple --- list>>> tup = (1, 2, 3, 'a', 's', 'd')>>> print (list(tup))[1, 2, 3, 'a', 's', 'd']>>> #不可转换成字典

• 加密游戏

  #!/usr/bin/python3                                                                                                                     # -*- coding: utf-8 -*-"""# Author: EricRay# Created Time : 2017-11-29 10:35:31# File Name: censor.py# Description:将文本的特殊字符用'*' 代替"""def censor(text, word):  num = 0   text_y = ''  text_t = text.split(' ')  for i in range(len(text_t)):      if text_t[i] == word:          text_t[i] = '*'           num += 1  if num == len(text_t):      return ''  else :      return ' '.join(list(text_t))text = (input('Please input text:'))word = (input('Please input word:'))print (censor(text, word))#结果展示$ python censor.py Please input text:you are so smart you youPlease input word:you* are so smart * *

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