- 1 year ago
Python module loading in child processes on windows
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In Python on Windows, when creating child processes using the multiprocessing
module, the child processes inherit the imports from the parent process. This means that any modules imported in the parent process will be available in the child processes as well.
Here's an example to demonstrate this behavior:
pythonimport multiprocessing
# Define a function to be executed in the child process
def child_function():
# Use the imported module in the child process
import my_module
my_module.do_something()
if __name__ == '__main__':
# Import the required module in the parent process
import my_module
# Create a child process
process = multiprocessing.Process(target=child_function)
# Start the child process
process.start()
# Wait for the child process to complete
process.join()
In this example, the my_module
module is imported in the parent process before creating the child process. The child process then uses the imported my_module
in its child_function()
.
You can use this approach to ensure that the required modules are available in both the parent and child processes when using the multiprocessing
module in Python on Windows.