Python天天美味(14) - splitlines

Python中的splitlines用来分割行。当传入的参数为True时，表示保留换行符 \n。通过下面的例子就很明白了:

mulLine = """Hello!!!

Wellcome to Python's world!

There are a lot of interesting things!

Enjoy yourself. Thank you!"""

print ''.join(mulLine.splitlines())

print '------------'

print ''.join(mulLine.splitlines(True))

输出结果：

Hello!!! Wellcome to Python's world! There are a lot of interesting things! Enjoy yourself. Thank you!

------------

Hello!!!

Wellcome to Python's world!

There are a lot of interesting things!

Enjoy yourself. Thank you!

利用这个函数，就可以非常方便写一些段落处理的函数了，比如处理缩进等方法。如Cookbook书中的例子：

def addSpaces(s, numAdd):

white = " "*numAdd

return white + white.join(s.splitlines(True))

def numSpaces(s):

return [len(line)-len(line.lstrip( )) for line in s.splitlines( )]

def delSpaces(s, numDel):

if numDel > min(numSpaces(s)):

raise ValueError, "removing more spaces than there are!"

return '\n'.join([ line[numDel:] for line in s.splitlines( ) ])

def unIndentBlock(s):

return delSpaces(s, min(numSpaces(s)))

Python 天天美味系列（总）

Python 天天美味(12) - 条件判断的缩写

Python 天天美味(13) - struct.unpack

Python 天天美味(14) - splitlines

Python 天天美味(15) - Python正则表达式操作指南(re使用)(转)

Python 天天美味(16) - 过滤字符串的技巧,map与itertools.imap

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