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Diffstat (limited to 'numpy/lib/arraysetops.py')
| -rw-r--r-- | numpy/lib/arraysetops.py | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/numpy/lib/arraysetops.py b/numpy/lib/arraysetops.py index 9a44d7e44..fa332e7fd 100644 --- a/numpy/lib/arraysetops.py +++ b/numpy/lib/arraysetops.py @@ -636,6 +636,13 @@ def in1d(ar1, ar2, assume_unique=False, invert=False, *, kind=None): f"Invalid kind: '{kind}'. Please use None, 'sort' or 'table'.") if integer_arrays and kind in {None, 'table'}: + + if ar2.size == 0: + if invert: + return np.ones_like(ar1, dtype=bool) + else: + return np.zeros_like(ar1, dtype=bool) + ar2_min = np.min(ar2) ar2_max = np.max(ar2) |