1 >>> string="i am from china 323HELLOstudet"
2 >>> string.capitalize() 将字符传第一个字母大写
3 'I am from china 323hellostudet'
4 >>> string.count()
5
6 Traceback (most recent call last):
7 File "<pyshell#2>", line 1, in <module>
8 string.count()
9 TypeError: count() takes at least 1 argument (0 given)
10 >>> string.count('a') 获得字符串的数目
11 2
12 >>> string.find('c') 获得字符串的起始位置
13 10
14 >>> string[10] 第十个元素
15 'c'
16 >>> string.isalnum() 是否包含0-1A-Z，a-z
17 False
18 >>> string.isalpha()
19 False
20 >>> string.isdigit()是否仅包含字母
21 False
22 >>> string.islower()是否均为小写
23 False
24 >>> string.istitle()字符串中单词是否首字母大写
25 False
26 >>> string.isspace() 所有字符是否均为空白字符
27 False
1 >>> string.isupper() 是否均为大写字母
2 False
3 >>> string.join('A')
4 'A'
5 >>> A.join(string)
6
7 Traceback (most recent call last):
8 File "<pyshell#16>", line 1, in <module>
9 A.join(string)
10 NameError: name 'A' is not defined
11 >>> 'A'.join(string) 连接字符串 *******
12 'iA AaAmA AfArAoAmA AcAhAiAnAaA A3A2A3AHAEALALAOAsAtAuAdAeAt'
13 >>> string.lower() 将字符串全部转换为小写
14 'i am from china 323hellostudet'
15 >>> string.split() 默认以空格分割
16 ['i', 'am', 'from', 'china', '323HELLOstudet']
17 >>> string.split('s') 以s分割
18 ['i am from china 323HELLO', 'tudet']
19 >>> string.swapcase() 将大写转换为小写，小写转换为大写
20 'I AM FROM CHINA 323helloSTUDET'
21 >>> string.title() 将字符串中单词首字母大写
22 'I Am From China 323Hellostudet'
23 >>> string.uper() 将全部字母转换为大写
24
25 Traceback (most recent call last):
26 File "<pyshell#23>", line 1, in <module>
27 string.uper()
28 AttributeError: 'str' object has no attribute 'uper'
29 >>> string.upper()
30 'I AM FROM CHINA 323HELLOSTUDET'
31 >>> len(string) 字符串长度
32 30
