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fix: handle None module in module_available() #11448

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fix: handle None module in module_available() #11448

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8 changes: 5 additions & 3 deletions xarray/namedarray/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -37,15 +37,15 @@


@lru_cache
def module_available(module: str, minversion: str | None = None) -> bool:
def module_available(module: str | None, minversion: str | None = None) -> bool:
"""Checks whether a module is installed without importing it.

Use this for a lightweight check and lazy imports.

Parameters
----------
module : str
Name of the module.
module : str or None
Name of the module. If None, returns False.
minversion : str, optional
Minimum version of the module

Expand All @@ -54,6 +54,8 @@ def module_available(module: str, minversion: str | None = None) -> bool:
available : bool
Whether the module is installed.
"""
if module is None:
return False
if importlib.util.find_spec(module) is None:
return False

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