Difference between revisions of "Numpy surprises"
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New in numpy version 2: numpy int types aren't promoted to bigger types. |
New in numpy version 2: numpy int types aren't promoted to bigger types. |
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| − | + | >>> np.uint8(1) + 255 |
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| − | + | <python-input-21>:1: RuntimeWarning: overflow encountered in scalar add |
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| − | + | np.uint8(0) |
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| + | # |
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| − | |||
| − | + | >>> np.__version__ |
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| − | + | '2.2.4' |
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The old numpy 1.24 used to promote numpy int types to 64-bit: |
The old numpy 1.24 used to promote numpy int types to 64-bit: |
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| − | + | >>> type(np.uint8(1) + 1) |
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| − | + | <class 'numpy.int64'> |
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| − | + | >>> np.__version__ |
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| − | + | '1.24.2' |
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Revision as of 16:54, 11 December 2025
New in numpy version 2: numpy int types aren't promoted to bigger types.
>>> np.uint8(1) + 255 <python-input-21>:1: RuntimeWarning: overflow encountered in scalar add np.uint8(0) # >>> np.__version__ '2.2.4'
The old numpy 1.24 used to promote numpy int types to 64-bit:
>>> type(np.uint8(1) + 1) <class 'numpy.int64'> >>> np.__version__ '1.24.2'
