python - Poor sympy performance -

python - Poor sympy performance -

i'm using sympy 0.7.5 (installed via pip) python 3.4.2 on windows 8.1 (x64). please consider short program:

import sympy import time start = time.time() in range(100): sympy.point(12345.0, 54321.0) print('elapsed (ms):', (time.time() - start) * 1000)

it takes machine 22 seconds execute this. missing here?

when generating sympy.points floating point numbers automatically converted rational numbers. can thing (e.g. if avoid floating point precision loss), can (very) slow. disable conversion rationals pass evaluate=false, e.g.

%timeit sympy.point(12345., 54321.) 10 loops, best of 3: 31.8 ms per loop %timeit sympy.point(12345., 54321., evaluate = false) 10000 loops, best of 3: 22.3 per loop

python floating-point sympy