diff options
Diffstat (limited to 'numpy/lib/function_base.py')
| -rw-r--r-- | numpy/lib/function_base.py | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/numpy/lib/function_base.py b/numpy/lib/function_base.py index 285f90a6f..af5a6e45c 100644 --- a/numpy/lib/function_base.py +++ b/numpy/lib/function_base.py @@ -671,11 +671,22 @@ def select(condlist, choicelist, default=0): raise ValueError("select with an empty condition list is not possible") choicelist = [np.asarray(choice) for choice in choicelist] - choicelist.append(np.asarray(default)) + + try: + intermediate_dtype = np.result_type(*choicelist) + except TypeError as e: + msg = f'Choicelist elements do not have a common dtype: {e}' + raise TypeError(msg) from None + default_array = np.asarray(default) + choicelist.append(default_array) # need to get the result type before broadcasting for correct scalar # behaviour - dtype = np.result_type(*choicelist) + try: + dtype = np.result_type(intermediate_dtype, default_array) + except TypeError as e: + msg = f'Choicelists and default value do not have a common dtype: {e}' + raise TypeError(msg) from None # Convert conditions to arrays and broadcast conditions and choices # as the shape is needed for the result. Doing it separately optimizes |