text: """pie_slice/overrides.py.
  
  Overrides Python syntax to conform to the Python3 version as much as possible using a '*' import
  
  Copyright (C) 2013  Timothy Edmund Crosley
  
  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.
  
  """
  from __future__ import absolute_import
  
  import collections
  import sys
  
  __version__ = "1.1.0"
  
  PY2 = sys.version_info[0] == 2
  PY3 = sys.version_info[0] == 3
  VERSION = sys.version_info
  
  __all__ = ['PY2', 'PY3', 'lru_cache', 'apply_changes_to_python_environment']
  
  
  if PY3:
      input = input
  
      def apply_changes_to_python_environment():
          pass
  else:
      input = raw_input  # noqa: F821
  
      python_environment_changes_applied = False
  
      import sys
      stdout = sys.stdout
      stderr = sys.stderr
  
      def apply_changes_to_python_environment():
          global python_environment_changes_applied
          if python_environment_changes_applied or sys.getdefaultencoding() == 'utf-8':
              python_environment_changes_applied = True
              return
  
          try:
              reload(sys)
              sys.stdout = stdout
              sys.stderr = stderr
              sys.setdefaultencoding('utf-8')
          except NameError:  # Python 3
              sys.exit('This should not happen!')
  
          python_environment_changes_applied = True
  
  
  if sys.version_info < (3, 2):
      try:
          from threading import Lock
      except ImportError:
          from dummy_threading import Lock
  
      from functools import wraps
  
      _CacheInfo = collections.namedtuple("CacheInfo", "hits misses maxsize currsize")
  
      def lru_cache(maxsize=100):
          """Least-recently-used cache decorator.
          Taking from: https://github.com/MiCHiLU/python-functools32/blob/master/functools32/functools32.py
          with slight modifications.
          If *maxsize* is set to None, the LRU features are disabled and the cache
          can grow without bound.
          Arguments to the cached function must be hashable.
          View the cache statistics named tuple (hits, misses, maxsize, currsize) with
          f.cache_info().  Clear the cache and statistics with f.cache_clear().
          Access the underlying function with f.__wrapped__.
          See: https://en.wikipedia.org/wiki/Cache_algorithms#Least_Recently_Used
  
          """
          def decorating_function(user_function, tuple=tuple, sorted=sorted, len=len, KeyError=KeyError):
              hits, misses = [0], [0]
              kwd_mark = (object(),)          # separates positional and keyword args
              lock = Lock()
  
              if maxsize is None:
                  CACHE = {}
  
                  @wraps(user_function)
                  def wrapper(*args, **kwds):
                      key = args
                      if kwds:
                          key += kwd_mark + tuple(sorted(kwds.items()))
                      try:
                          result = CACHE[key]
                          hits[0] += 1
                          return result
                      except KeyError:
                          pass
                      result = user_function(*args, **kwds)
                      CACHE[key] = result
                      misses[0] += 1
                      return result
              else:
                  CACHE = collections.OrderedDict()
  
                  @wraps(user_function)
                  def wrapper(*args, **kwds):
                      key = args
                      if kwds:
                          key += kwd_mark + tuple(sorted(kwds.items()))
                      with lock:
                          cached = CACHE.get(key, None)
                          if cached:
                              del CACHE[key]
                              CACHE[key] = cached
                              hits[0] += 1
                              return cached
                      result = user_function(*args, **kwds)
                      with lock:
                          CACHE[key] = result     # record recent use of this key
                          misses[0] += 1
                          while len(CACHE) > maxsize:
                              CACHE.popitem(last=False)
                      return result
  
              def cache_info():
                  """Report CACHE statistics."""
                  with lock:
                      return _CacheInfo(hits[0], misses[0], maxsize, len(CACHE))
  
              def cache_clear():
                  """Clear the CACHE and CACHE statistics."""
                  with lock:
                      CACHE.clear()
                      hits[0] = misses[0] = 0
  
              wrapper.cache_info = cache_info
              wrapper.cache_clear = cache_clear
              return wrapper
  
          return decorating_function
  
  else:
      from functools import lru_cache
  