/usr/lib/python2.7/dist-packages/isodatetime/util.py is in python-cylc 7.6.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | # -*- coding: utf-8 -*-
# ----------------------------------------------------------------------------
# (C) British Crown Copyright 2013-2017 Met Office.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# ----------------------------------------------------------------------------
"""Provide an optimisation decorator and other utilities."""
MAX_CACHE_SIZE = 100000
def cache_results(func):
"""Decorator to store results for given inputs.
func is the decorated function.
A maximum of MAX_CACHE_SIZE arg-value pairs are stored.
"""
cache = {}
def wrap_func(*args, **kwargs):
key = (str(args), str(kwargs))
if key in cache:
return cache[key]
else:
results = func(*args, **kwargs)
if len(cache) > MAX_CACHE_SIZE:
cache.popitem()
cache[key] = results
return results
return wrap_func
|