续接上文
1.isdecimal,isgigit,isnumeric:当前输入是否为数字
1 v1 = test.isdecimal()
2 v2 = test.isdigit()
3 v3 = test.isnumeric()
4 print(v1, v2)
结果：
2.isidentifier:判断是否为标识符
1 import keyword
2 print(keyword.iskeyword("def"))
3 test = "def"
4 v = test.isidentifier()
5 print(v)
结果：
3.isprintable:是否存在不可显示的字符
1 # 制表符
2 #
换行符
3 test = "ddfer huyb"
4 v = test.isprintable()
5 print(v)
结果：
4.isspace:判断是否全部是空格
1 test = " "
2 v = test.isspace()
3 print(v)
结果：
5.istitle:判断是否为标题
1 test = "Adsjdjksdskd jdfksdslkdj"
2 v1 = test.istitle()
3 print(v1)
4 v = test.title()
5 print(v)
6 v2 = test.istitle()
7 print(v2)
结果：
False
Adsjdjksdskd Jdfksdslkdj
False
6.join:将字符串中的每一个元素按照指定分隔符进行拼接
1 test = "你是风儿我是沙"
2 print(test)
3 t = ' '
4 v = t.join(test)
5 v1 = '_'.join(test)
6 print(v)
7 print(v1)
结果：
你是风儿我是沙
你 是 风 儿 我 是 沙
你_是_风_儿_我_是_沙
7.ljust,rjust,zfill:对字符串指定大小填充字符
1 test = "feng"
2 v = test.ljust(20,"*")
3 v1 = test.rjust(20,"*")
4 v2 = test.zfill(20)
5 print(v)
6 print(v1)
7 print(v2)
结果:
feng****************
****************feng
0000000000000000feng
8.islower,lower,isupper,upper:判断是否全部大小写和转换为大小写
1 test = "Feng"
2 v1 = test.islower()
3 v2 = test.lower()
4 print(v1,v2)
5 v3 = test.isupper()
6 v4 = test.upper()
7 print(v3,v4)
结果：
9.lstrip,rstrip,strip:去除左右空白， ，
1 test = "
feng "
2 v = test.lstrip()
3 v1 = test.rstrip()
4 v2 = test.strip()
5 print(v,v1,v2)
结果:
10.translate:将对应的字符进行转换
1 v = "saevdds;gfuiuyv;sdiujsd"
2 m = str.maketrans("aeiou", "12345")
3 new_v = v.translate(m)
4 print(new_v)
结果:
11.partition,rpartition,split,rsplit:按照指定字符进行分割
1 test = "testuufuskjksdkd"
2 v = test.partition('s') # 最多分割成三分
3 v1 = test.rpartition('s')
4 v2 = test.split('s',2)
5 v3 = test.rsplit('s',3)
6 print(v, v1, v2, v3)
结果：
('te', 's', 'tuufuskjksdkd') ('testuufuskjk', 's', 'dkd') ['te', 'tuufu', 'kjksdkd'] ['te', 'tuufu', 'kjk', 'dkd']
12.splitlines:分割，只能根据，True,False:是否保留换行
1 test1 = "wdsdsfd
sdfdfg
cadewefq
sd"
2 v4 = test1.splitlines(True)
3 print(v4)
结果：
['wdsdsfd
', 'sdfdfg
', 'cadewefq
', 'sd']
13.startswith,endswith:以xxx开头，以xx结尾
1 test = "backend 1.1.1.1"
2 v = test.startswith("a")
3 print(v)
4 v1 = test.endswith('a')
5 print(v1)
结果：
14.swapcase:大小写转换
1 test = "feng"
2 v = test.swapcase()
3 print(v)
结果：
好了，这就是差不多所有常用的字符串常用功能