1、join方法：拼接字符串------->stra = "你是风儿我是沙"b = "@".join(a)print(b)>>>你@是@风@儿@我@是@沙2、strip方法：处理左右空格、\t、\n----->str 还可以处理指定内容a.strip("x") a.lstrip a.rstrip()a = " Hello world"b = a.strip()print(b)>>>Hello World3、对应字符转化：str.maketrans/translate----->strv = "abcdefghijklmnodsjjkkkee"#原字符串m = str.maketrans("aeiou",'12345')#构造对应关系m
new_v = v.translate(m)#生成新关系print(new_v)>>>1bcd2fgh3jklmn4dsjjkkk224、partition字符串分割，分三段---->元祖
v = "abcdefghijklmnodsjjkkkee"b = v.partition("s")print(b)>>>('abcdefghijklmnod', 's', 'jjkkkee')
5、split字符串分割，一刀两断，两刀三段，拿不到分割元素---->list
v = " abcbdefbghijk "b = v.split()c = v.split('b')d = v.split('b',2)print(1,b)print(2,c)print(3,d)>>>1 ['abcbdefbghijk']>>>2 [' a', 'c', 'def', 'ghijk ']>>>3 [' a', 'c', 'defbghijk ']6、splitlines按照\n进行分割----->list
a = "abcsjdfk\nfjsdjf\njdfkdj\nsdfsf"b = a.splitlines()(参数可以是True/False是否保留\n)print(b)for i in b:#处理文本方式 print(i)>>>['abcsjdfk', 'fjsdjf', 'jdfkdj', 'sdfsf']7、find方法:返回int，第一个索引号
a = '123bcds'b = a.find('b')print(b,type(b))>>>3 <class 'int'>
