--- a/env/lib/python3.7/site-packages/isodate/isodates.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,213 +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 modules provides a method to parse an ISO 8601:2004 date string to a
-python datetime.date instance.
-
-It supports all basic, extended and expanded formats as described in the ISO
-standard. The only limitations it has, are given by the Python datetime.date
-implementation, which does not support dates before 0001-01-01.
-'''
-import re
-from datetime import date, timedelta
-
-from isodate.isostrf import strftime, DATE_EXT_COMPLETE
-from isodate.isoerror import ISO8601Error
-
-DATE_REGEX_CACHE = {}
-# A dictionary to cache pre-compiled regular expressions.
-# A set of regular expressions is identified, by number of year digits allowed
-# and whether a plus/minus sign is required or not. (This option is changeable
-# only for 4 digit years).
-
-
-def build_date_regexps(yeardigits=4, expanded=False):
-    '''
-    Compile set of regular expressions to parse ISO dates. The expressions will
-    be created only if they are not already in REGEX_CACHE.
-
-    It is necessary to fix the number of year digits, else it is not possible
-    to automatically distinguish between various ISO date formats.
-
-    ISO 8601 allows more than 4 digit years, on prior agreement, but then a +/-
-    sign is required (expanded format). To support +/- sign for 4 digit years,
-    the expanded parameter needs to be set to True.
-    '''
-    if yeardigits != 4:
-        expanded = True
-    if (yeardigits, expanded) not in DATE_REGEX_CACHE:
-        cache_entry = []
-        # ISO 8601 expanded DATE formats allow an arbitrary number of year
-        # digits with a leading +/- sign.
-        if expanded:
-            sign = 1
-        else:
-            sign = 0
-        # 1. complete dates:
-        #    YYYY-MM-DD or +- YYYYYY-MM-DD... extended date format
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"-(?P<month>[0-9]{2})-(?P<day>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        #    YYYYMMDD or +- YYYYYYMMDD... basic date format
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"(?P<month>[0-9]{2})(?P<day>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        # 2. complete week dates:
-        #    YYYY-Www-D or +-YYYYYY-Www-D ... extended week date
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"-W(?P<week>[0-9]{2})-(?P<day>[0-9]{1})"
-                                      % (sign, yeardigits)))
-        #    YYYYWwwD or +-YYYYYYWwwD ... basic week date
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})W"
-                                      r"(?P<week>[0-9]{2})(?P<day>[0-9]{1})"
-                                      % (sign, yeardigits)))
-        # 3. ordinal dates:
-        #    YYYY-DDD or +-YYYYYY-DDD ... extended format
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"-(?P<day>[0-9]{3})"
-                                      % (sign, yeardigits)))
-        #    YYYYDDD or +-YYYYYYDDD ... basic format
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"(?P<day>[0-9]{3})"
-                                      % (sign, yeardigits)))
-        # 4. week dates:
-        #    YYYY-Www or +-YYYYYY-Www ... extended reduced accuracy week date
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"-W(?P<week>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        #    YYYYWww or +-YYYYYYWww ... basic reduced accuracy week date
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})W"
-                                      r"(?P<week>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        # 5. month dates:
-        #    YYY-MM or +-YYYYYY-MM ... reduced accuracy specific month
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"-(?P<month>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        #    YYYMM or +-YYYYYYMM ... basic incomplete month date format
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      r"(?P<month>[0-9]{2})"
-                                      % (sign, yeardigits)))
-        # 6. year dates:
-        #    YYYY or +-YYYYYY ... reduced accuracy specific year
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}(?P<year>[0-9]{%d})"
-                                      % (sign, yeardigits)))
-        # 7. century dates:
-        #    YY or +-YYYY ... reduced accuracy specific century
-        cache_entry.append(re.compile(r"(?P<sign>[+-]){%d}"
-                                      r"(?P<century>[0-9]{%d})"
-                                      % (sign, yeardigits - 2)))
-
-        DATE_REGEX_CACHE[(yeardigits, expanded)] = cache_entry
-    return DATE_REGEX_CACHE[(yeardigits, expanded)]
-
-
-def parse_date(
-        datestring,
-        yeardigits=4, expanded=False, defaultmonth=1, defaultday=1):
-    '''
-    Parse an ISO 8601 date string into a datetime.date object.
-
-    As the datetime.date implementation is limited to dates starting from
-    0001-01-01, negative dates (BC) and year 0 can not be parsed by this
-    method.
-
-    For incomplete dates, this method chooses the first day for it. For
-    instance if only a century is given, this method returns the 1st of
-    January in year 1 of this century.
-
-    supported formats: (expanded formats are shown with 6 digits for year)
-      YYYYMMDD    +-YYYYYYMMDD      basic complete date
-      YYYY-MM-DD  +-YYYYYY-MM-DD    extended complete date
-      YYYYWwwD    +-YYYYYYWwwD      basic complete week date
-      YYYY-Www-D  +-YYYYYY-Www-D    extended complete week date
-      YYYYDDD     +-YYYYYYDDD       basic ordinal date
-      YYYY-DDD    +-YYYYYY-DDD      extended ordinal date
-      YYYYWww     +-YYYYYYWww       basic incomplete week date
-      YYYY-Www    +-YYYYYY-Www      extended incomplete week date
-      YYYMM       +-YYYYYYMM        basic incomplete month date
-      YYY-MM      +-YYYYYY-MM       incomplete month date
-      YYYY        +-YYYYYY          incomplete year date
-      YY          +-YYYY            incomplete century date
-
-    @param datestring: the ISO date string to parse
-    @param yeardigits: how many digits are used to represent a year
-    @param expanded: if True then +/- signs are allowed. This parameter
-                     is forced to True, if yeardigits != 4
-
-    @return: a datetime.date instance represented by datestring
-    @raise ISO8601Error: if this function can not parse the datestring
-    @raise ValueError: if datestring can not be represented by datetime.date
-    '''
-    if yeardigits != 4:
-        expanded = True
-    isodates = build_date_regexps(yeardigits, expanded)
-    for pattern in isodates:
-        match = pattern.match(datestring)
-        if match:
-            groups = match.groupdict()
-            # sign, century, year, month, week, day,
-            # FIXME: negative dates not possible with python standard types
-            sign = (groups['sign'] == '-' and -1) or 1
-            if 'century' in groups:
-                return date(
-                    sign * (int(groups['century']) * 100 + 1),
-                    defaultmonth, defaultday)
-            if 'month' not in groups:  # weekdate or ordinal date
-                ret = date(sign * int(groups['year']), 1, 1)
-                if 'week' in groups:
-                    isotuple = ret.isocalendar()
-                    if 'day' in groups:
-                        days = int(groups['day'] or 1)
-                    else:
-                        days = 1
-                    # if first week in year, do weeks-1
-                    return ret + timedelta(weeks=int(groups['week']) -
-                                           (((isotuple[1] == 1) and 1) or 0),
-                                           days=-isotuple[2] + days)
-                elif 'day' in groups:  # ordinal date
-                    return ret + timedelta(days=int(groups['day']) - 1)
-                else:  # year date
-                    return ret.replace(month=defaultmonth, day=defaultday)
-            # year-, month-, or complete date
-            if 'day' not in groups or groups['day'] is None:
-                day = defaultday
-            else:
-                day = int(groups['day'])
-            return date(sign * int(groups['year']),
-                        int(groups['month']) or defaultmonth, day)
-    raise ISO8601Error('Unrecognised ISO 8601 date format: %r' % datestring)
-
-
-def date_isoformat(tdate, format=DATE_EXT_COMPLETE, yeardigits=4):
-    '''
-    Format date strings.
-
-    This method is just a wrapper around isodate.isostrf.strftime and uses
-    Date-Extended-Complete as default format.
-    '''
-    return strftime(tdate, format, yeardigits)