collections.namedtuple implemented in c.
Project description
An implementation of namedtuple written in c for warp speed.
Tested against Python 3.4 and 3.5, and 3.6 as of 3084914245d2
Warp Speed
Time to go fast.
Setup
Use qualified imports so that we can tell which namedtuple we are using.
>>> from namedtuple import namedtuple as cnamedtuple
>>> from collections import namedtuple as stdnamedtuple
>>> from pickle import dumps, loadsLittle numbers
Cute graphs
These operations scale with the number of fields.
Type creation from a string of field names.
Type creation from a sequence of field names.
Instance creation.
Less cute numbers
These operations do not scale with number of fields.
std_inst is an instance of a collections.namedtuple created type with six named fields: a, b, c, d, e, and f.
c_inst is an instance of a cnamedtuple.namedtuple created type with six named fields: a, b, c, d, e, and f.
Field Access
In [1]: %timeit std_inst.c
10000000 loops, best of 3: 71.9 ns per loop
In [2]: %timeit c_inst.c
10000000 loops, best of 3: 38.4 ns per loopPickle Roundtrip
In [3]: %timeit loads(dumps(std_inst))
100000 loops, best of 3: 6.28 µs per loop
In [4]: %timeit loads(dumps(c_inst))
100000 loops, best of 3: 4.72 µs per loopContributing
The project is hosted on github.
Before submitting a patch, please make sure your Python code is PEP8 compliant and your c code is PEP7 compliant.
Contact
Please file all bug reports on github.
For questions or comments, feel free to email me at joe@quantopian.com
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