python字符串方法

s1 = "wangs"
s2 = s1.center(15,‘*‘)
print (s2)
s3 = len(s2)
print(s3)


*****wangs*****
15

s4 = "a is b are isaisa c"
ll =  len(s4)
print(ll)
s5 = s4.count(‘is‘)
print(s5)


19
3

s1 = "abc"
s2 = s1.endswith(‘c‘)
print(s2)

True

s1 = "hhh\tjjj"
print(s1.expandtabs(20))


hhh                 jjj

s1 = "ab is are"
s2 = print(s1.find(‘a‘))

0

s1 = "hello {0},age {1}"
print(s1)
new1=s1.format("aaa",19)
print (new1)


hello {0},age {1}
hello aaa,age 19

s1 = "88d88 "
print(s1.isalpha())


False

s1 = "wang"
li = ["aaa","bbb"]
print(‘S‘.join(s1))
print(‘‘.join(s1))
print(‘‘.join(li))


wSaSnSg
wang
aaabbb

s1 = " www 22 "
print(s1.lstrip())


www 22

s1 = " www 22 "
print(s1.rstrip())


 www 22

s1 = " www 22 "
print(s1.strip())


www 22

s1 = "ab is aa 3 fs "
print(s1.partition(‘is‘)


(‘ab ‘, ‘is‘, ‘ aa 3 fs ‘)

s1 = "ab is aa"
print (s1.replace(‘ab‘,‘xxx‘))


xxx is aa

s1 = "abisaaandandin"
s2 = "aa\nbb\nadm"
print(s1.split(‘and‘))
print(s2.split(‘\n‘))


[‘abisaa‘, ‘‘, ‘in‘]
[‘aa‘, ‘bb‘, ‘adm‘]

s1 = "abdS"
print (s1.swapcase())


ABDs