chore: Remove unnecessary comprehension

Author: pnijhara

xarray/core/groupby.py

@@ -29,7 +29,7 @@ def check_reduce_dims(reduce_dims, dimensions):
     if reduce_dims is not ...:
         if is_scalar(reduce_dims):
             reduce_dims = [reduce_dims]
-        if any([dim not in dimensions for dim in reduce_dims]):
+        if any(dim not in dimensions for dim in reduce_dims):
             raise ValueError(
                 "cannot reduce over dimensions %r. expected either '...' to reduce over all dimensions or one or more of %r."
                 % (reduce_dims, dimensions)

xarray/core/pdcompat.py

@@ -55,4 +55,4 @@ def count_not_none(*args) -> int:
 
     Copied from pandas.core.common.count_not_none (not part of the public API)
     """
-    return sum([arg is not None for arg in args])
+    return sum(arg is not None for arg in args)

xarray/core/variable.py

@@ -2412,7 +2412,7 @@ def assert_unique_multiindex_level_names(variables):
 
     duplicate_names = [v for v in level_names.values() if len(v) > 1]
     if duplicate_names:
-        conflict_str = "\n".join([", ".join(v) for v in duplicate_names])
+        conflict_str = "\n".join(", ".join(v) for v in duplicate_names)
         raise ValueError("conflicting MultiIndex level name(s):\n%s" % conflict_str)
     # Check confliction between level names and dimensions GH:2299
     for k, v in variables.items():