imaplib: append returns a tuple (status, [data])
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According to the docstring for append: ``` (typ, [data]) = <instance>.append(mailbox, flags, date_time, message) ``` [v3.0](https://github.com/python/cpython/blob/v3.0/Lib/imaplib.py#L313) [v3.14](https://github.com/python/cpython/blob/v3.14.0/Lib/imaplib.py#L483) Further corroborated that this is a tuple of some sort because append returns the result of `self._simple_command(...)`, which returns the result of `self._command_complete(...)`, which returns `typ, data`.
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donbarbos
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Dec 28, 2025
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Thank you! Only one nit
donbarbos
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Dec 28, 2025
Co-authored-by: Semyon Moroz <donbarbos@proton.me>
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
donbarbos
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| def recent(self) -> _CommandResults: ... | ||
| def response(self, code: str) -> _CommandResults: ... | ||
| def append(self, mailbox: str, flags: str, date_time: str, message: ReadableBuffer) -> str: ... | ||
| def append(self, mailbox: str, flags: str, date_time: str, message: ReadableBuffer) -> tuple[str, _list[bytes]]: ... |
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According to the docstring for
append:Python v3.0
Python v3.14
Further corroborated that this is a tuple because
appendreturns the result ofself._simple_command(...), which returns the result ofself._command_complete(...), which returnstyp, data.From something like this
I'm getting a Mypy (v1.17.1) type error:
when in practice unpacking the tuple works just fine.