New submission from Martin Larralde <martin.larra...@embl.de>:
The documentation for `IOBase.readlines` states that the `hint` optional argument should be used like so (https://docs.python.org/3/library/io.html#io.IOBase.readlines): > Read and return a list of lines from the stream. hint can be specified to > control the number of lines read: no more lines will be read if the total > size (in bytes/characters) of all lines so far exceeds hint. So in the case where `hint` is null, I would expect `readlines` to return an empty list. However, this is neither the case for `io.BytesIO` nor for `io.FileIO`: ``` import io io.BytesIO(b"abc\ndef\nghi\n").readlines(0) # this evaluates to [b"abc\n", b"def\n", b"ghi\n"] ``` If this is the intended behaviour, the documentation should be updated, otherwise the code from the `io` module should be fixed. ---------- assignee: docs@python components: Documentation messages: 386484 nosy: althonos2, docs@python priority: normal severity: normal status: open title: IOBase.readlines(0) behaviour is inconsistent with documentation type: behavior versions: Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue43126> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
