37 lines
927 B
Python
37 lines
927 B
Python
"""
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Stand-alone module to provide information about whether optional deps exist.
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"""
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from importlib import import_module
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import logging
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import sys
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logger = logging.getLogger(__name__)
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_not_importable = set()
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def get_module(name, should_load=True):
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"""
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Return module or None. Absolute import is required.
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:param (str) name: Dot-separated module path. E.g., 'scipy.stats'.
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:raise: (ImportError) Only when exc_msg is defined.
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:return: (module|None) If import succeeds, the module will be returned.
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"""
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if not should_load:
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return sys.modules.get(name, None)
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if name not in _not_importable:
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try:
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return import_module(name)
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except ImportError:
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_not_importable.add(name)
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except Exception:
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_not_importable.add(name)
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msg = f"Error importing optional module {name}"
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logger.exception(msg)
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return None
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