python字符串string的内置方法实例详解

Python  /  管理员 发布于 7年前   152

下面给大家分享python 字符串string的内置方法，具体内容详情如下所示：

#__author: "Pizer Wang"#__date: 2018/1/28a = "Let's go"print(a)print("-------------------")a = 'Let\'s go'print(a)print("-------------------")print("hello" * 3)print("helloworld"[2:])print("-------------------")print("ell" in "helloworld")print("-------------------")print("Pizer is a good student")print("%s is a goog student" % "Pizer")print("-------------------")a = "1234"b = "abcd"c = "!@#$"d = a + b + cprint(d)d = "".join([a, b, c])print(d)d = ", ".join([a, b, c])print(d)d = "++".join([a, b, c])print(d)print("-------------------")print("string的内置方法")str = "helloworld"print(str.count("l"))   #统计元个数print(str.capitalize())   #首字母大写print(str.center(25, "-"))  #居中print(str.endswith("d"))print(str.endswith("world"))print(str.endswith("word"))  #是否以某个内容结尾print(str.startswith("hello")) #是否以某个内容开始str = "hello\tworld"print(str.expandtabs(tabsize=10))print("-------------------")str = "helloworld {name} is {age}"print(str.find("w"))   #查找到第一个元素并将索引值返回print(str.format(name = "Pizer", age = 18))print(str.format_map({"name":"Jone", "age":25}))print("-------------------")print(str.index("w"))#print(str.index("www"))  #报错print(str.find("wwww"))print("-------------------")str = "123abc"print(str.isalnum())str = "123"print(str.isalnum())str = "abc"print(str.isalnum())str = "!@$"print(str.isalnum())str = "中国万岁"print(str.isalnum())print("-------------------")print("123456".isdecimal())print("123456ff".isdecimal())print("123456789".isdigit())print("12345.6789".isdigit())print("12345.6789".isnumeric())print("-------------------")print("34abc".isidentifier())print("_34abc".isidentifier())print("abc".islower())print("abC".islower())print("ABC".isupper())print(" ".isspace())print("-------------------")print("Hello Jone".istitle())print("Good morning".istitle())print("-------------------")print("Hello Jone".lower())print("Good morning".upper())print("Hello Jone".swapcase())print("-------------------")print("Hello world".ljust(20, "-"))print("Hello world".rjust(20, "-"))print(" Hello world \t \n")print(" Hello world ".strip())print(" Hello world ".lstrip())print(" Hello world ".rstrip())print("-------------------")print("Hello Jone Jone".replace("Jone", "Pizer"))print("Hello Jone Jone".replace("Jone", "Pizer", 1))print("My title".find("t"))print("My title".rfind("t"))print("-------------------")print("Hello world".split(" "))print("Hello world".split("l", 1))print("Hello world".rsplit("l", 1))print("hello jone".title())print("-------------------")#重要的字符串方法# print(st.count('l'))# print(st.center(50,'#')) # 居中# print(st.startswith('he')) # 判断是否以某个内容开头# print(st.find('t'))# print(st.format(name='alex',age=37)) # 格式化输出的另一种方式 待定：?:{}# print('My tLtle'.lower())# print('My tLtle'.upper())# print('\tMy tLtle\n'.strip())# print('My title title'.replace('itle','lesson',1))# print('My title title'.split('i',1))

执行结果:

Let's go
Let's go
hellohellohello
lloworld
True
Pizer is a good student
Pizer is a goog student
1234abcd!@#1234abcd!@#
1234abcd!@#
 1234, abcd, !@#$
1234++abcd++!@#$
string的内置方法
3
 Helloworld
――Chelloworld――-
True
 True
 False
 True
hello world
5
 helloworld Pizer is 18
helloworld Jone is 25
5
-1
True
 True
 True
 False
True
True
 False
 True
 False
False
False
 True
 True
 False
 True
True
True
False
hello jone
 GOOD MORNING
hELLO jONE
Hello world―――
 ―――Hello world
 Hello world
Hello world
 Hello world
 Hello world
Hello Pizer Pizer
 Hello Pizer Jone
 3
5
[‘Hello', ‘world']
 [‘He', ‘lo world']
 [‘Hello wor', ‘d']
Hello Jone

总结

以上所述是小编给大家介绍的python字符串string的内置方法实例详解，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对站的支持！