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DeprecationWarning: the load_module() method is deprecated and slated for removal in Python 3.12; use exec_module() instead #2576

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merged 2 commits into from
Feb 5, 2024
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DeprecationWarning: the load_module() method is deprecated and slated for removal in Python 3.12; use exec_module() instead #2576

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76ddd66
use `importlib.util` to import module from locustfile
mgor Feb 1, 2024
1d768c8
handle if no module spec was found
mgor Feb 1, 2024
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17 changes: 14 additions & 3 deletions locust/util/load_locustfile.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
from __future__ import annotations

import importlib
import importlib.util
import inspect
import os
import sys
Expand Down Expand Up @@ -53,9 +54,19 @@ def load_locustfile(path) -> tuple[str | None, dict[str, User], list[LoadTestSha
# Add to front, then remove from original position
sys.path.insert(0, directory)
del sys.path[i + 1]

# Perform the import
source = importlib.machinery.SourceFileLoader(os.path.splitext(locustfile)[0], path)
imported = source.load_module()
module_name = os.path.splitext(locustfile)[0]
loader = importlib.machinery.SourceFileLoader(module_name, path)
spec = importlib.util.spec_from_file_location(module_name, path, loader=loader)
if spec is None:
sys.stderr.write(f"Unable to get module spec for {module_name} in {path}")
sys.exit(1)

imported = importlib.util.module_from_spec(spec)
sys.modules[imported.__name__] = imported
loader.exec_module(imported)

# Remove directory from path if we added it ourselves (just to be neat)
if added_to_path:
del sys.path[0]
Expand All @@ -67,6 +78,6 @@ def load_locustfile(path) -> tuple[str | None, dict[str, User], list[LoadTestSha
user_classes = {name: value for name, value in vars(imported).items() if is_user_class(value)}

# Find shape class, if any, return it
shape_classes = [value() for name, value in vars(imported).items() if is_shape_class(value)]
shape_classes = [value() for value in vars(imported).values() if is_shape_class(value)]

return imported.__doc__, user_classes, shape_classes
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