On Wed, May 6, 2020 at 1:42 PM Kirill Balunov <kirillbalu...@gmail.com>
wrote:
> I'm totally agree with everything you said here. From my perspective,
> comparing three main cases:
> 1. zip(*iters, strict= (False | True))
> 2. zip(*iters, mode = ('shortest' | 'equal' | 'longest'))
> 3. zip_equal(*iters)
>
Thanks for enumerating these. I think that's helpful so I'll flesh it out a
bit more. I *think* these are the options on the table:
(note, I'm keeping different names for things as the same option, and in no
particular order)
1) No change
zip(*iters)
itertools.zip_longest(*iters, fillvalue=None)
2) Add boolean strict flag to zip
zip(*iters, strict= (False | True))
itertools.zip_longest(*iters, fillvalue=None)
3) Add a ternary mode flag to zip
zip(*iters, mode = ('shortest' | 'equal' | 'longest'), fillvalue=None)
4) Add a new function to itertools
zip(*iters)
itertools.zip_longest(*iters, fillvalue=None)
itertools.zip_equal(*iters)
Brandt: this might be helpful for the PEP.
For my part, seeing it this way makes me think that (2) adding a strict
flag to zip, while keeping zip_longest on its own in itertools, is the
worst option.
For me:
+1 on the ternary flag
+0.5 on a new function in itertools
-0 on the boolean flag to zip()
-CHB
--
Christopher Barker, PhD
Python Language Consulting
- Teaching
- Scientific Software Development
- Desktop GUI and Web Development
- wxPython, numpy, scipy, Cython
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