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@ -596,14 +596,14 @@ the module.
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.. attribute:: __file__
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.. attribute:: __cached__
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``__file__`` is the pathname of the file from which the module
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was loaded, if it was loaded from a file. The ``__file__`` attribute
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might be missing for certain types of modules, such as C modules that
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are statically linked into the interpreter; for extension modules
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loaded dynamically from a shared library, it is the pathname of the
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shared libray file. ``__file__`` is optional. If set, this attribute'
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value must be a string.The import system may opt to leave ``__file__``
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unset if it has no semantic meaning (e.g. a module loaded from a database).
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``__file__`` is optional (if set, value must be a string). It indicates
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the pathname of the file from which the module was loaded (if
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loaded from a file), or the pathname of the shared libray file
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for extension modules loaded dynamically from a shared library.
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It might be missing for certain types of modules, such as C
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modules that are statically linked into the interpreter, and the
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import system may opt to leave it unset if it has no semantic
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meaning (e.g. a module loaded from a database).
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If ``__file__`` is set, it may also be appropriate to set the
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``__cached__`` attribute which is the path to any compiled version of
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