from collections.abc import Iterable, Sequence, Iterator, Container
def in_operator(x, y):
if type(y) == type:
if isinstance(x, y):
return True
return False
elif (type(y) == list or type(y) == set) and type(y[0]) == type:
type_check = in_operator(x[0], y[0])
len_check = len(x) == len(y)
return type_check and len_check
elif type(y) == dict and type(y[0]) == type:
NotImplemented
else:
return x in y
class Range:
def __init__(self, start, end):
self.start = start
self.end = end
def __contains__(self, item):
pass
def __getitem__(self, item):
pass
def __len__(self):
pass
def __iter__(self):
return RangeIterator(rng=self)
Sequence.register(Range)
Container.register(Range)
Iterable.register(Range)
class LeftOpenRange(Range):
def __contains__(self, item):
return self.start < item <= self.end
def __getitem__(self, item):
return NotImplemented
def __len__(self):
return NotImplemented
class RightOpenRange(Range):
def __contains__(self, item):
return self.start <= item < self.end
def __getitem__(self, item):
return NotImplemented
def __len__(self):
return NotImplemented
class OpenRange(Range):
def __contains__(self, item):
return self.start < item < self.end
def __getitem__(self, item):
return NotImplemented
def __len__(self):
return NotImplemented
class ClosedRange(Range):
def __contains__(self, item):
return self.start <= item <= self.end
def __getitem__(self, item):
return NotImplemented
def __len__(self):
return NotImplemented
class RangeIterator:
def __init__(self, rng):
self.rng = rng
self.needle = self.rng.start
if type(self.rng.start) == int:
if not(self.needle in self.rng):
self.needle += 1
elif type(self.rng.start) == str:
if not(self.needle in self.rng):
self.needle = chr(ord(self.needle) + 1)
else:
if not(self.needle in self.rng):
self.needle = self.needle.incremented()
def __iter__(self):
return self
def __next__(self):
if type(self.rng.start) == int:
if self.needle in self.rng:
result = self.needle
self.needle += 1
return result
elif type(self.rng.start) == str:
if self.needle in self.rng:
result = self.needle
self.needle = chr(ord(self.needle) + 1)
return result
else:
if self.needle in self.rng:
result = self.needle
self.needle = self.needle.incremented()
return result
raise StopIteration
Iterator.register(RangeIterator)