import sys
import decimal
from decimal import Context
if sys.version_info > (3,):
long = int
xrange = range
else:
long = long # pylint: disable=long-builtin
xrange = xrange # pylint: disable=xrange-builtin
# unicode / binary types
if sys.version_info > (3,):
text_type = str
binary_type = bytes
string_types = (str,)
unichr = chr
def maybe_decode(x):
return x.decode()
def maybe_encode(x):
return x.encode()
else:
text_type = unicode # pylint: disable=unicode-builtin, undefined-variable
binary_type = str
string_types = (
basestring, # pylint: disable=basestring-builtin, undefined-variable
)
unichr = unichr # pylint: disable=unichr-builtin
def maybe_decode(x):
return x
def maybe_encode(x):
return x
def round_py2_compat(what):
"""
Python 2 and Python 3 use different rounding strategies in round(). This
function ensures that results are python2/3 compatible and backward
compatible with previous py2 releases
:param what: float
:return: rounded long
"""
d = Context(
prec=len(str(long(what))), # round to integer with max precision
rounding=decimal.ROUND_HALF_UP
).create_decimal(str(what)) # str(): python 2.6 compat
return long(d)
