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May 19, 2015
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Update p13_aligning_text_strings.rst #7

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22 changes: 11 additions & 11 deletions source/c02/p13_aligning_text_strings.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -18,11 +18,11 @@

>>> text = 'Hello World'
>>> text.ljust(20)
'Hello World '
'Hello World '
>>> text.rjust(20)
' Hello World'
' Hello World'
>>> text.center(20)
' Hello World '
' Hello World '
>>>
所有这些方法都能接受一个可选的填充字符。比如：

Expand All @@ -40,11 +40,11 @@
.. code-block:: python

>>> format(text, '>20')
' Hello World'
' Hello World'
>>> format(text, '<20')
'Hello World '
'Hello World '
>>> format(text, '^20')
' Hello World '
' Hello World '
>>>

如果你想指定一个非空格的填充字符，将它写到对齐字符的前面即可：
Expand All @@ -62,7 +62,7 @@
.. code-block:: python

>>> '{:>10s} {:>10s}'.format('Hello', 'World')
' Hello World'
' Hello World'
>>>

``format()`` 函数的一个好处是它不仅适用于字符串。它可以用来格式化任何值，使得它非常的通用。
Expand All @@ -72,9 +72,9 @@

>>> x = 1.2345
>>> format(x, '>10')
' 1.2345'
' 1.2345'
>>> format(x, '^10.2f')
' 1.23 '
' 1.23 '
>>>

|
Expand All @@ -87,9 +87,9 @@
.. code-block:: python

>>> '%-20s' % text
'Hello World '
'Hello World '
>>> '%20s' % text
' Hello World'
' Hello World'
>>>

但是，在新版本代码中，你应该优先选择 ``format()`` 函数或者方法。
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