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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://fosstodon.org/users/jamescooke/statuses/113444024404808648">James C :python: (jamescooke@fosstodon.org)'s status on Friday, 08-Nov-2024 08:28:33 JST</a><a href="https://fosstodon.org/@jamescooke" title="jamescooke@fosstodon.org"><img src="https://gnusocial.jp/avatar/293401-48-20241107232832.webp" width="48" height="48" alt="James C :python:" style="position: absolute; left: 0; top: 0;">James C :python:</a><div><a href="https://fosstodon.org/@wizzwizz4/113443990060821569" rel="in-reply-to">in reply to</a><ul><li></ul></div></section><article><p><a href="https://fosstodon.org/@wizzwizz4">@wizzwizz4</a> Testing zero with `is` is safe because it's got a fixed memory address: <a href="https://realpython.com/python-is-identity-vs-equality/#when-only-some-integers-are-interned" rel="nofollow noreferrer">https://realpython.com/python-is-identity-vs-equality/#when-only-some-integers-are-interned</a></p><p>Try your code with 256 and 257 - you'll see that 256 gives True and 257 gives False.</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/3959502#notice-7734726">In conversation</a><time datetime="2024-11-08T08:28:33+09:00" title="Friday, 08-Nov-2024 08:28:33 JST">about 15 days ago</time> <span>from <span><a href="https://fosstodon.org/@jamescooke/113444024404808648" rel="external" title="Sent from fosstodon.org via ActivityPub">fosstodon.org</a></span></span><a href="https://fosstodon.org/@jamescooke/113444024404808648">permalink</a><h4>Attachments</h4><ol><li><article><header><div>Domain not in remote thumbnail source whitelist: files.realpython.com</div><h5><a href="https://realpython.com/python-is-identity-vs-equality/#when-only-some-integers-are-internedTry">Python '!=' Is Not 'is not': Comparing Objects in Python – Real Python</a></h5><div> from <span>@realpython</span></div></header><div>In this quick and practical tutorial, you'll learn when to use the Python is, is not, == and != operators. You'll see what these comparison operators do under the hood, dive into some quirks of object identity and interning, and define a custom class.</div><footer></footer></article></li></ol></footer></blockquote>

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James C :python: (jamescooke@fosstodon.org)'s status on Friday, 08-Nov-2024 08:28:33 JSTJames C :python:
in reply to
- wizzwizz4
@wizzwizz4 Testing zero with `is` is safe because it's got a fixed memory address: https://realpython.com/python-is-identity-vs-equality/#when-only-some-integers-are-interned
Try your code with 256 and 257 - you'll see that 256 gives True and 257 gives False.
In conversationabout 15 days ago from fosstodon.orgpermalink
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  Python '!=' Is Not 'is not': Comparing Objects in Python – Real Python
  from @realpython
  In this quick and practical tutorial, you'll learn when to use the Python is, is not, == and != operators. You'll see what these comparison operators do under the hood, dive into some quirks of object identity and interning, and define a custom class.

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