39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
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import sys
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import importlib
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from importlib.util import LazyLoader, find_spec, module_from_spec
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import pytest
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# Warning raised by _reload_guard() in numpy/__init__.py
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@pytest.mark.filterwarnings("ignore:The NumPy module was reloaded")
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def test_lazy_load():
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# gh-22045. lazyload doesn't import submodule names into the namespace
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# muck with sys.modules to test the importing system
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old_numpy = sys.modules.pop("numpy")
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numpy_modules = {}
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for mod_name, mod in list(sys.modules.items()):
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if mod_name[:6] == "numpy.":
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numpy_modules[mod_name] = mod
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sys.modules.pop(mod_name)
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try:
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# create lazy load of numpy as np
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spec = find_spec("numpy")
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module = module_from_spec(spec)
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sys.modules["numpy"] = module
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loader = LazyLoader(spec.loader)
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loader.exec_module(module)
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np = module
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# test a subpackage import
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from numpy.lib import recfunctions
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# test triggering the import of the package
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np.ndarray
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finally:
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if old_numpy:
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sys.modules["numpy"] = old_numpy
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sys.modules.update(numpy_modules)
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