--- a/env/lib/python3.7/site-packages/isodate/isoduration.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,151 +0,0 @@
-##############################################################################
-# Copyright 2009, Gerhard Weis
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are met:
-#
-#  * Redistributions of source code must retain the above copyright notice,
-#    this list of conditions and the following disclaimer.
-#  * Redistributions in binary form must reproduce the above copyright notice,
-#    this list of conditions and the following disclaimer in the documentation
-#    and/or other materials provided with the distribution.
-#  * Neither the name of the authors nor the names of its contributors
-#    may be used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-# CONTRACT, STRICT LIABILITY, OR TORT
-##############################################################################
-'''
-This module provides an ISO 8601:2004 duration parser.
-
-It also provides a wrapper to strftime. This wrapper makes it easier to
-format timedelta or Duration instances as ISO conforming strings.
-'''
-from datetime import timedelta
-from decimal import Decimal
-import re
-
-from six import string_types
-
-from isodate.duration import Duration
-from isodate.isoerror import ISO8601Error
-from isodate.isodatetime import parse_datetime
-from isodate.isostrf import strftime, D_DEFAULT
-
-ISO8601_PERIOD_REGEX = re.compile(
-    r"^(?P<sign>[+-])?"
-    r"P(?!\b)"
-    r"(?P<years>[0-9]+([,.][0-9]+)?Y)?"
-    r"(?P<months>[0-9]+([,.][0-9]+)?M)?"
-    r"(?P<weeks>[0-9]+([,.][0-9]+)?W)?"
-    r"(?P<days>[0-9]+([,.][0-9]+)?D)?"
-    r"((?P<separator>T)(?P<hours>[0-9]+([,.][0-9]+)?H)?"
-    r"(?P<minutes>[0-9]+([,.][0-9]+)?M)?"
-    r"(?P<seconds>[0-9]+([,.][0-9]+)?S)?)?$")
-# regular expression to parse ISO duartion strings.
-
-
-def parse_duration(datestring):
-    """
-    Parses an ISO 8601 durations into datetime.timedelta or Duration objects.
-
-    If the ISO date string does not contain years or months, a timedelta
-    instance is returned, else a Duration instance is returned.
-
-    The following duration formats are supported:
-      -PnnW                  duration in weeks
-      -PnnYnnMnnDTnnHnnMnnS  complete duration specification
-      -PYYYYMMDDThhmmss      basic alternative complete date format
-      -PYYYY-MM-DDThh:mm:ss  extended alternative complete date format
-      -PYYYYDDDThhmmss       basic alternative ordinal date format
-      -PYYYY-DDDThh:mm:ss    extended alternative ordinal date format
-
-    The '-' is optional.
-
-    Limitations:  ISO standard defines some restrictions about where to use
-      fractional numbers and which component and format combinations are
-      allowed. This parser implementation ignores all those restrictions and
-      returns something when it is able to find all necessary components.
-      In detail:
-        it does not check, whether only the last component has fractions.
-        it allows weeks specified with all other combinations
-
-      The alternative format does not support durations with years, months or
-      days set to 0.
-    """
-    if not isinstance(datestring, string_types):
-        raise TypeError("Expecting a string %r" % datestring)
-    match = ISO8601_PERIOD_REGEX.match(datestring)
-    if not match:
-        # try alternative format:
-        if datestring.startswith("P"):
-            durdt = parse_datetime(datestring[1:])
-            if durdt.year != 0 or durdt.month != 0:
-                # create Duration
-                ret = Duration(days=durdt.day, seconds=durdt.second,
-                               microseconds=durdt.microsecond,
-                               minutes=durdt.minute, hours=durdt.hour,
-                               months=durdt.month, years=durdt.year)
-            else:  # FIXME: currently not possible in alternative format
-                # create timedelta
-                ret = timedelta(days=durdt.day, seconds=durdt.second,
-                                microseconds=durdt.microsecond,
-                                minutes=durdt.minute, hours=durdt.hour)
-            return ret
-        raise ISO8601Error("Unable to parse duration string %r" % datestring)
-    groups = match.groupdict()
-    for key, val in groups.items():
-        if key not in ('separator', 'sign'):
-            if val is None:
-                groups[key] = "0n"
-            # print groups[key]
-            if key in ('years', 'months'):
-                groups[key] = Decimal(groups[key][:-1].replace(',', '.'))
-            else:
-                # these values are passed into a timedelta object,
-                # which works with floats.
-                groups[key] = float(groups[key][:-1].replace(',', '.'))
-    if groups["years"] == 0 and groups["months"] == 0:
-        ret = timedelta(days=groups["days"], hours=groups["hours"],
-                        minutes=groups["minutes"], seconds=groups["seconds"],
-                        weeks=groups["weeks"])
-        if groups["sign"] == '-':
-            ret = timedelta(0) - ret
-    else:
-        ret = Duration(years=groups["years"], months=groups["months"],
-                       days=groups["days"], hours=groups["hours"],
-                       minutes=groups["minutes"], seconds=groups["seconds"],
-                       weeks=groups["weeks"])
-        if groups["sign"] == '-':
-            ret = Duration(0) - ret
-    return ret
-
-
-def duration_isoformat(tduration, format=D_DEFAULT):
-    '''
-    Format duration strings.
-
-    This method is just a wrapper around isodate.isostrf.strftime and uses
-    P%P (D_DEFAULT) as default format.
-    '''
-    # TODO: implement better decision for negative Durations.
-    #       should be done in Duration class in consistent way with timedelta.
-    if (((isinstance(tduration, Duration) and
-          (tduration.years < 0 or tduration.months < 0 or
-           tduration.tdelta < timedelta(0))) or
-        (isinstance(tduration, timedelta) and
-         (tduration < timedelta(0))))):
-        ret = '-'
-    else:
-        ret = ''
-    ret += strftime(tduration, format)
-    return ret