Python module introduction-textwrap text packaging and filling

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Instance text:

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 in1_text editors.

'''

Paragraph filling:

Import textwrap

From textwrap_exampleimport sample_text

 

Print 'nodedent: \ N'

Printtextwrap. fill (sample_text, width = 50)

Execution result:

# 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 invalid text editors.

The result is left aligned and the first line is indented. The space in the row is retained.

Remove indent:

Import textwrap

Fromtextwrap_example import sample_text

 

Dedented_text = textwrap. dedent (sample_text)

Print 'dedented :'

Printdedented_text

Execution result:

# 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 invalid text editors.

In this way, the first line will not be indented.

Combined with removing indentation and filling:

Import textwrap

Fromtextwrap_example import sample_text

 

Dedented_text = textwrap. dedent (sample_text). strip ()

For width in [45, 70]:

Print '% d Columns: \ n' % width

Print textwrap. fill (dedented_text, width = width)

Print

Execution result:

# 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 detail

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 your texteditors.

Suspension indent: the first line of the suspension indent is smaller than the indentation of other lines.

Import textwrap

Fromtextwrap_example import sample_text

 

Dedented_text = textwrap. dedent (sample_text). strip ()

Printtextwrap. fill (dedented_text,

Initial_indent = '',

Subsequent_indent = ''* 4,

Width = 50,

)

Execution result:

# Pythontextwrap_hanging_indent.py

The textwrapmodule can be used to format text

Output in situations where pretty-printingis

Desired. It offers programmatic functionality

Similar to the paragraph wrapping orfilling

Features found in your text editors.

'* 4 can also be replaced by other characters.

 

TextWrap provides the wrap () and fill () functions, as well as the TextWrapper class, tool functions dedent (). Usually wrap or fill in one or two strings using wrap () and fill (). In other cases, TextWrapper is more efficient.

 

Textwrap. wrap (text [, width [,...])

Wrap a single paragraph (text is input, a string), and the maximum width of each line is width. Returns the list of output rows without line breaks. Width: 70 by default.

 

Textwrap. fill (text [, width [,...])

Wrap a Text Segment and return a string containing the section. It is actually the abbreviation of "\ n". join (wrap (text. Wrap () and fill () create a TextWrapper instance and call a method. These instances are not reused, so it is more effective to wrap/populate many text strings to construct your own TextWrapper object. TextWrapper. break_long_words: Specifies whether to split long words.

Textwrap. dedent (text)

Unindent removes the blank at the beginning of each line. This allows you to easily display the content in the three quotation marks without modifying the indentation in the source code.