"""Python 2 & 3 compatibility.
"""
import sys
from datetime import datetime
from datetime import timedelta
from datetime import tzinfo
if sys.version_info[0] > 2:
from datetime import timezone
UTC = timezone.utc
def strptime(data, fmt):
return datetime.strptime(data, fmt)
else:
class timezone(tzinfo):
def __init__(self, offset):
self._utcoffset = offset
def utcoffset(self, dt):
return self._utcoffset
def tzname(self, dt):
return "-"
def dst(self, dt):
return timedelta(0)
UTC = timezone(timedelta(hours=0, minutes=0))
def strptime(data, fmt):
if fmt.endswith('%z'):
date = datetime.strptime(data[:-5], fmt[:-2])
try:
sign = {'-': -1, '+': 1}[data[-5]]
hours = sign * int(data[-4:-2])
minutes = sign * int(data[-2:])
except KeyError:
raise ValueError(
"time data '{}' does not match format '{}'.".format(
data,
fmt))
date = date.replace(tzinfo=timezone(timedelta(hours=hours,
minutes=minutes)))
else:
date = datetime.strptime(data, fmt)
return date
