Python常见字符串操作函数小结【split()、join()、strip()】

> s = ('www.google.com')
> print(s)
www.google.com
> s.split('.')
['www', 'google', 'com']

> s = 'www.google.com'
> s
'www.google.com'
> s.split('.', maxsplit=1)
['www', 'google.com']

> s = 'WinXP||Win7||Win8||Win8.1'
> s
'WinXP||Win7||Win8||Win8.1'
> s.split('||')
['WinXP', 'Win7', 'Win8', 'Win8.1']
>

> seq1 = ['hello','good','boy','doiido']
> print ' '.join(seq1)
hello good boy doiido
> print ':'.join(seq1)
hello:good:boy:doiido

> seq2 = "hello good boy doiido"
> print ':'.join(seq2)
h:e:l:l:o: :g:o:o:d: :b:o:y: :d:o:i:i:d:o

> seq3 = ('hello','good','boy','doiido')
> print ':'.join(seq3)
hello:good:boy:doiido

> seq4 = {'hello':1,'good':2,'boy':3,'doiido':4}
> print ':'.join(seq4)
boy:good:doiido:hello

> import os
> os.path.join('/hello/','good/boy/','doiido')
'/hello/good/boy/doiido'

> a = '123abc'
> a.strip('21')
'3abc'  结果是一样的
> a.strip('12')
'3abc'

> a = '123abc'
> a.strip('21')
'3abc'  结果是一样的
> a.strip('12')
'3abc'