Numpy deprecation warning in test_buffer.py

[pitrou]

Bug report

When running test_buffer.py on the main branch with Numpy installed, the following warnings are displayed:

0:00:00 load avg: 0.29 Run tests sequentially
0:00:00 load avg: 0.29 [1/1] test_buffer
/home/antoine/cpython/default/Lib/test/test_buffer.py:2298: DeprecationWarning: tostring() is deprecated. Use tobytes() instead.
  self.assertEqual(b, na.tostring(order='C'))
/home/antoine/cpython/default/Lib/test/test_buffer.py:2321: DeprecationWarning: tostring() is deprecated. Use tobytes() instead.
  self.assertEqual(b, na.tostring(order='F'))
/home/antoine/cpython/default/Lib/test/test_buffer.py:2345: DeprecationWarning: tostring() is deprecated. Use tobytes() instead.
  self.assertEqual(b, na.tostring(order='A'))

== Tests result: SUCCESS ==

A clear and concise description of what the bug is.
Include a minimal, reproducible example (https://stackoverflow.com/help/minimal-reproducible-example), if possible.

Your environment

Numpy version 1.23.3, installed from source on a debug build of the CPython main branch.

[pitrou]

cc @corona10

[corona10]

Oops, I pushed the change to e8c1fed at #96738 already.
If you want to handle it separately please let me know.

[pitrou]

No, it's fine to me. Thanks!