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Import utilities
Exported classes:
ImportManager Manage the import process
Importer Base class for replacing standard import functions
BuiltinImporter Emulate the import mechanism for builtin and frozen modules
DynLoadSuffixImporter
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%c C sz | s | j d � r d S| d } | d r@ t j | } | S| j d � } | d k r_ d S| | } t j | } | S( sJ Returns the context in which a module should be imported.
The context could be a loaded (package) module and the imported module
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meaning there is no context -- the module should be looked for as a
"top-level" module.
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c C sQ | d } | j d | } | j | | | � } | s: d S| j | | d | � S( s� Attempt to import the module relative to parent.
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inserted into new module before the code object is executed. This
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object, then these names/values will be inserted *after* the module
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saved back to the filesystem for future imports. The source file's
modification timestamp must be provided as a Long value.
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