Confusing Pyright errors from Python-2-style octal literals

[microbit-matt-hillsdon]

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Python 3.9.10 (main, Jan 15 2022, 11:48:00) 
[Clang 13.0.0 (clang-1300.0.29.3)] on darwin
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>>> 0123
  File "<stdin>", line 1
    0123
       ^
SyntaxError: leading zeros in decimal integer literals are not permitted; use an 0o prefix for octal integers
>>> 0o123
83
>>>