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python_lazy_module_import_with_importlib_lazyloader.py

python

Implements a lazy loader that defers the loading of a module until its attr

15d ago15 linesdocs.python.org
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python_lazy_module_import_with_importlib_lazyloader.py
1import importlib.util
2import sys
3
4def lazy_import(name):
5    spec = importlib.util.find_spec(name)
6    loader = importlib.util.LazyLoader(spec.loader)
7    spec.loader = loader
8    module = importlib.util.module_from_spec(spec)
9    sys.modules[name] = module
10    loader.exec_module(module)
11    return module
12
13# Example usage:
14# math = lazy_import("math")
15# print(math.pi)