Le 11/04/2018 à 23:34, George Leslie-Waksman a écrit : > I really like this proposal in the context of `while` loops but I'm > lukewarm in other contexts. > > I specifically like what this would do for repeated calls. > > ... > > md5 = hashlib.md5() > with open(filename, 'rb') as file_reader: > while chunk := file_reader.read(1024): > md5.update(chunk) > > seems really nice. I'm not sure the other complexity is justified by > this nicety and I'm really wary of anything that makes comprehensions > more complicated; I already see enough comprehension abuse to the point > of illegibility. > > --George > >
I like the new syntax, but you can already do what you want with iter(): md5 = hashlib.md5() with open('/etc/fstab', 'rb') as file_reader: for chunk in iter(lambda: file_reader.read(1024), b''): md5.update(chunk) Anyway, both use case fall short IRL, because you would wrap read in huge try/except to deal with the mess that is letting a user access the filesystem. _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/