dict test

gistfile1.txt

http://www.doughellmann.com/articles/misc/dict-performance/

$ ./pypy-c --version
Python 2.7.3 (e537e0093563, Oct 13 2012, 22:21:46)
[PyPy 1.9.1-dev0 with GCC 4.4.4]

$ ./pypy-c -m timeit -n 1000000 -r 5 -v 'dict()'
raw times: 0.0186 0.00177 0.00134 0.00134 0.00234
1000000 loops, best of 5: 0.00134 usec per loop

$ ./pypy-c -m timeit -n 1000000 -r 5 -v '{}'
raw times: 0.00387 0.00146 0.00234 0.00243 0.00142
1000000 loops, best of 5: 0.00142 usec per loop

$ ./pypy-c -m timeit -n 1000000 -r 5 -v 'dict(a="A", b="B", c="C")'
raw times: 0.326 0.305 0.304 0.304 0.304
1000000 loops, best of 5: 0.304 usec per loop

$ ./pypy-c -m timeit -n 1000000 -r 5 -v '{"a": "A", "b": "B", "c": "C"}'
raw times: 0.0153 0.00134 0.00134 0.00134 0.00212
1000000 loops, best of 5: 0.00134 usec per loop