Interestingly, this just showed up on Python List: On 10/06/2016 05:09 AM, Frank Millman wrote:
I have used itertools.groupby before, and I love it. I used it to process a csv file and 'break' on change of a particular field. It worked very well. Now I want to use it to process a database table. I can select the rows in the desired sequence with no problem. However, I am using asyncio, so I am reading the rows asynchronously. My 'reader' class has __aiter__() and __anext__() defined. If I pass the reader to groupby, I get the error message 'object is not iterable'. Before I spend hours trying to figure it out, can anyone confirm if this is doable at all, or is groupby not designed for this.
Is adapting the groupby recipe in the docs and adding async support (and thus duplicating code) the only way at this point? Will there be a better way in the future? -- ~Ethan~ _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
