Samuel Muldoon writes: > Python's `str` class has a method named `join` > > I was wondering if a future release of python could have a `list.join` > which behaves in a similar fashion. > > result = [99].join([1, 2, 3]) > print(result) > # prints [1, 99, 2, 99, 3]
I wouldn't call that an example of .join. To me, .join takes an argument which in the most general case is iterable of iterables. Your example's argument is the more general iterable of object. So I don't think .join is a good name for this function. Maybe .interpolate, although that has a different meaning in statistics. Also, .join "works" for str because it's *not* general. It's useful because the "algebra" of strings is built of making lists of strings and then "flattening" them into a single string. Encoding the single string so that it can be "decoded" into the original list of words involves inserting separator characters such as space, newline, crlf, or comma. And that's exactly .join! I can't think offhand how I would use either a generalized .join or this function, except with str or bytes, both of which already have .join. Do you have an application for either a list join or for this interpolation function? .join might be useful in a signal processing application for the same reason it's useful for strings, but the interpolation semantics, I don't see it. _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/5ZWQEPN3LIZS5NGCR73RWOKVMTXUSQ3L/ Code of Conduct: http://python.org/psf/codeofconduct/
