Serhiy Storchaka added the comment:
I agree that it would be nice to have. But this feature has a cost.
$ ./python -m timeit -s 'from urllib.parse import ParseResult' --
"ParseResult('http', 'u...@example.com:p...@www.python.org:080', '/doc/', '',
'query=yes', 'frag')"
Unpatched: 1.61 usec per loop
Patched: 2.1 usec per loop
$ ./python -m timeit -s 'from urllib.parse import urlparse' --
'urlparse("http://u...@example.com:p...@www.python.org:080/doc/?query=yes#frag";)'
Unpatched: 8.87 usec per loop
Patched: 9.22 usec per loop
Is this cost significant?
The cost can be decreased by using global _tuple_new = tuple.__new__. But this
couples the code too tight to implementation details of namedtuple.
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nosy: +rhettinger, serhiy.storchaka
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<http://bugs.python.org/issue23416>
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