On Mon, Oct 4, 2021 at 4:41 PM Robert Kern <robert.k...@gmail.com> wrote: > > On Mon, Oct 4, 2021 at 1:09 AM <hongyi.z...@gmail.com> wrote: >> >> Thank you for pointing this out. This is the code block which includes the >> first appearance of the keyword `logical_not`. >> >> BTW, why can't the ~ operator be tested equal to 'np.invert', as shown below: >> >> ``` >> In [1]: import numpy as np >> In [3]: np.invert is np.bitwise_not >> Out[3]: True >> >> In [4]: np.invert is ~ >> File "<ipython-input-4-32abf1603b17>", line 1 >> np.invert is ~ >> ^ >> SyntaxError: invalid syntax >> ``` > > > That’s just the way Python’s syntax works. Operators are not names that can > be resolved to objects that can be compared with the `is` operator. Instead, > when that operator is evaluated in an expression, the Python interpreter will > look up a specially-named method on the operand object (in this case > `__invert__`). Numpy array objects implement this method using `np.invert`.
If so, which is symlink to which, I mean, which is the original name, and which is an alias? 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: arch...@mail-archive.com
