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Update p09_add_directories_to_sys_path.rst #251

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Dec 6, 2018
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Update p09_add_directories_to_sys_path.rst #251

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2 changes: 1 addition & 1 deletion source/c10/p09_add_directories_to_sys_path.rst
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Expand Up @@ -48,7 +48,7 @@
sys.path.insert(0, '/some/dir')
sys.path.insert(0, '/other/dir')

虽然这能“工作”，它是在实践中极为脆弱，应尽量避免使用。这种方法的问题是，它将目录名硬编码到了你的源代码。如果你的代码被移到一个新的位置，这会导致维护问题。更好的做法是在不修改源代码的情况下，将path配置到其他地方。如果您使用模块级的变量来精心构造一个适当的绝对路径，有时你可以解决硬编码目录的问题，比如__file__。举个例子：
虽然这能“工作”，但是在实践中极为脆弱，应尽量避免使用。这种方法的问题是，它将目录名硬编码到了你的源代码。如果你的代码被移到一个新的位置，这会导致维护问题。更好的做法是在不修改源代码的情况下，将path配置到其他地方。如果您使用模块级的变量来精心构造一个适当的绝对路径，有时你可以解决硬编码目录的问题，比如__file__。举个例子：

.. code-block:: python

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