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Update p15_interpolating_variables_in_strings.rst #8

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May 20, 2015
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Update p15_interpolating_variables_in_strings.rst #8

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2 changes: 1 addition & 1 deletion source/c02/p15_interpolating_variables_in_strings.rst
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Expand Up @@ -61,7 +61,7 @@ Python并没有对在字符串中简单替换变量值提供直接的支持。

.. code-block:: python

class SafeSub(dict):
class safesub(dict):
"""防止key找不到"""
def __missing__(self, key):
return '{' + key + '}'
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