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bpo-41718: runpy now imports pkgutil in functions (GH-24996)
Reduce the number of modules imported by "python3 -m module". The runpy module no longer imports at startup (in the module body), but only in functions using it: _get_code_from_file() and run_path().
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@ -16,7 +16,6 @@
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import io
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import types
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import os
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from pkgutil import read_code, get_importer
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__all__ = [
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"run_module", "run_path",
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@ -233,6 +232,7 @@ def _get_main_module_details(error=ImportError):
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def _get_code_from_file(run_name, fname):
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# Check for a compiled file first
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from pkgutil import read_code
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decoded_path = os.path.abspath(os.fsdecode(fname))
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with io.open_code(decoded_path) as f:
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code = read_code(f)
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@ -255,6 +255,7 @@ def run_path(path_name, init_globals=None, run_name=None):
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if run_name is None:
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run_name = "<run_path>"
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pkg_name = run_name.rpartition(".")[0]
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from pkgutil import get_importer
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importer = get_importer(path_name)
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# Trying to avoid importing imp so as to not consume the deprecation warning.
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is_NullImporter = False
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