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# -*- coding: utf-8 -*-
# Copyright (c) 2010 Mark Sandstrom
# Copyright (c) 2011-2015 Raphaël Barrois
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""Compatibility tools"""
import datetime
import decimal
import sys
PY2 = (sys.version_info[0] == 2)
if PY2: # pragma: no cover
def is_string(obj):
return isinstance(obj, (str, unicode))
from StringIO import StringIO as BytesIO
else: # pragma: no cover
def is_string(obj):
return isinstance(obj, str)
from io import BytesIO
try: # pragma: no cover
# Python >= 3.2
UTC = datetime.timezone.utc
except AttributeError: # pragma: no cover
try:
# Fallback to pytz
from pytz import UTC
except ImportError:
# Ok, let's write our own.
class _UTC(datetime.tzinfo):
"""The UTC tzinfo."""
def utcoffset(self, dt):
return datetime.timedelta(0)
def tzname(self, dt):
return "UTC"
def dst(self, dt):
return datetime.timedelta(0)
def localize(self, dt):
dt.astimezone(self)
UTC = _UTC()
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