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python中字符串的分割和组合

发布时间：2014-10-18 15:16:19编辑：songlin阅读（150）

字符串的分割和组合

>>> s

'hello World! Everyone! This Is My First String!'

>>> s.split()

['hello', 'World!', 'Everyone!', 'This', 'Is', 'My', 'First', 'String!']

>>> s.split(' ',4)

['hello', 'World!', 'Everyone!', 'This', 'Is My First String!']

>>> s.split('e')

['h', 'llo World! Ev', 'ryon', '! This Is My First String!']

>>> s.rsplit()

['hello', 'World!', 'Everyone!', 'This', 'Is', 'My', 'First', 'String!']

>>> s.rsplit(' ',4)

['hello World! Everyone! This', 'Is', 'My', 'First', 'String!']

>>> s.rsplit('e')

['h', 'llo World! Ev', 'ryon', '! This Is My First String!']

#s.split([sep, [maxsplit]]) 以sep是分隔符，把s分割成一个list。sep默认为空格。maxsplit是分割的次数，默认是对整个s进行分割

#s.rsplit([sep, [maxsplit]]) 和split()的区别是它是从s的串尾往前进行分割
 

>>> s=s.replace(' ','/n')

>>> s

'hello/nWorld!/nEveryone!/nThis/nIs/nMy/nFirst/nString!'

>>> s.splitlines()

['hello', 'World!', 'Everyone!', 'This', 'Is', 'My', 'First', 'String!']

>>> s.splitlines(True)

['hello/n', 'World!/n', 'Everyone!/n', 'This/n', 'Is/n', 'My/n', 'First/n', 'String!']

>>> s.splitlines(False)

['hello', 'World!', 'Everyone!', 'This', 'Is', 'My', 'First', 'String!']

>>> '/t'.join(s.splitlines())

'hello/tWorld!/tEveryone!/tThis/tIs/tMy/tFirst/tString!'

#s.splitlines([keepends]) 把s按照行分隔符分成一个list。如果keepends为True则list的每个元素保留行分割符，如果为False则不保留分隔符

#s.join(seq) 用s把seq序列串联起来