On Wed, Sep 11, 2019 at 5:49 AM Ivan Pozdeev via Python-Dev <python-dev@python.org> wrote: > > On 10.09.2019 21:12, Chris Angelico wrote: > > On Wed, Sep 11, 2019 at 12:47 AM Daniel Holth <dho...@gmail.com> wrote: > >> On Sat, Jun 22, 2019 at 2:48 AM Serhiy Storchaka <storch...@gmail.com> > >> wrote: > >>> 22.06.19 01:08, Daniel Holth пише: > >>>> Thanks. I think I might like an option to disable str(bytes) without > >>>> disabling str != bytes. Unless the second operation would also corrupt > >>>> output. > >>>> > >>>> Came across this kind of set in the hyper http library which uses a set > >>>> to accept certain headers with either str or bytes keys. > >>> Does that library support Python 2? If it is true than you have a > >>> problem, because u'abc' == b'abc' in Python 2 and u'abc' != b'abc' in > >>> Python 3. > >>> > >>> If it is Python 3 only, you can just ignore BytesWarning. It was added > >>> purely to help to catch subtle bugs in transition to Python 3. In > >>> future, after Python 2 be out of use, BytesWarning will become deprecated. > >> > >> I stopped using Python 3 after learning about str(bytes) by finding it in > >> my corrupted database. Ever since then I've been anxious about changing to > >> the new language, since it makes it so easy to convert from bytes to > >> unicode by accident without specifying a valid encoding. So I would like > >> to see a future where str(bytes) is effectively removed. I started working > >> on a pull request that adds an API to toggle str(bytes) at runtime with a > >> thread local (instead of requiring a command line argument), so you could > >> do with no_str_bytes(): if you were worried about the feature, but got a > >> bit stuck in the internals. > >> > > Python has, for as long as I've known it, permitted you to call str() > > on literally any object - if there's no other string form, you get its > > repr. Breaking this would break all manner of debugging techniques. > Isn't repr() the API intended for "all manner of debugging techniques"?
If you simply print(some_obj) it will use str by default, so you don't want to break that. ChrisA _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/EMDXVPYCYASCA66AKUB5ENEM453STIDE/
