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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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j � � | j � | S( sN Compile (and cache) a Python source file.
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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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