python模块学习- textwrap 文本包装和填充

代码实例：

sample_text = '''

   The textwrap module can beused to format text for output in

   situations wherepretty-printing is desired.  It offers

   programmatic functionalitysimilar to the paragraph wrapping

   or filling features found inmany text editors.

'''

段落填充：

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import textwrap from textwrap_exampleimport sample_text    print 'Nodedent:\n' printtextwrap.fill(sample_text, width=50)

 

执行结果：

# pythontextwrap_fill.py

No dedent:

 

    The textwrap module can be used to format

text for outputin     situations where pretty-

printing is desired.  It offers    programmatic

functionalitysimilar to the paragraph wrapping

or fillingfeatures found in many text editors.

结果为左对齐，第一行有缩进。行中的空格继续保留。

移除缩进：

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import textwrap fromtextwrap_exampleimport sample_text    dedented_text= textwrap.dedent(sample_text) print 'Dedented:' printdedented_text

 

执行结果：

# pythontextwrap_dedent.py

Dedented:

 

The textwrapmodule can be used to format text for output in

situations wherepretty-printing is desired.  It offers

programmaticfunctionality similar to the paragraph wrapping

or fillingfeatures found in many text editors.

这样第一行就不会缩进。

结合移除缩进和填充：

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import textwrap fromtextwrap_exampleimport sample_text    dedented_text=textwrap.dedent(sample_text).strip() for widthin [45,70 ]:        print '%d Columns:\n' % width        print textwrap.fill(dedented_text,width=width)        print

 

执行结果：

# pythontextwrap_fill_width.py

45 Columns:

 

The textwrapmodule can be used to format

text for output insituations where pretty-

printing isdesired.  It offers programmatic

functionalitysimilar to the paragraph

wrapping orfilling features found in many

text editors.

 

70 Columns:

 

The textwrapmodule can be used to format text for output in

situations wherepretty-printing is desired.  It offersprogrammatic

functionality similarto the paragraph wrapping or filling features

found in many texteditors.

悬挂缩进：悬挂缩进第一行的缩进小于其他行的缩进。

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import textwrap fromtextwrap_exampleimport sample_text    dedented_text=textwrap.dedent(sample_text).strip() printtextwrap.fill(dedented_text,                     initial_indent='',                     subsequent_indent=' ' * 4,                     width=50,                     )        执行结果： # pythontextwrap_hanging_indent.py The textwrapmodule can be used toformat textfor     outputin situations where pretty-printingis     desired. It offers programmatic functionality     similar to the paragraph wrapping orfilling     features foundin many text editors.