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Ensure to Pre-Load imports in main thread #5

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Ensure to Pre-Load imports in main thread #5

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Ensure to Pre-Load imports in main thread
stefanhahmann May 8, 2025
ce5812e
Reduce line length of comment
stefanhahmann May 8, 2025
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12 changes: 12 additions & 0 deletions src/appose/python_worker.py
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,18 @@ def execute_script():

self._report_completion()

# pre-load imports in before starting a new separate Thread.
# in windows some imports (e.g. numpy) lead to the script
# get stuck if loaded in separate thread
block = ast.parse(script, mode='exec')
import_nodes = [
node for node in block.body
if isinstance(node, (ast.Import, ast.ImportFrom))
]
import_block = ast.Module(body=import_nodes, type_ignores=[])
compiled_imports = compile(import_block, filename="<imports>", mode="exec")
exec(compiled_imports, globals())

# Create a thread and save a reference to it, in case its script
# ends up killing the thread. This happens e.g. if it calls sys.exit.
self.thread = Thread(target=execute_script, name=f"Appose-{self.uuid}")
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