On Tue, Oct 19, 2021 at 3:42 PM <hongyi.z...@gmail.com> wrote: > See the following testing in IPython shell: > > In [6]: import numpy as np > > In [7]: a = np.array([1], dtype=(bool)) > > In [8]: b = np.array([1], dtype=bool) > > In [9]: a > Out[9]: array([ True]) > > In [10]: b > Out[10]: array([ True]) > > It seems that dtype=(bool) and dtype=bool are both correct usages. If so, > which is preferable? >
This is not really a numpy issue: in Python itself `(bool)` is the exact same thing as `bool`. Superfluous parentheses are just ignored. You could use `dis.dis` to compare the two expressions and see that they compile to the same bytecode. So go with `dtype=bool`. András > Regards, > HZ > _______________________________________________ > NumPy-Discussion mailing list -- numpy-discussion@python.org > To unsubscribe send an email to numpy-discussion-le...@python.org > https://mail.python.org/mailman3/lists/numpy-discussion.python.org/ > Member address: deak.and...@gmail.com >
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