mirror of
https://github.com/Tautulli/Tautulli.git
synced 2025-07-10 15:32:38 -07:00
Add backports version for collections for 2.6
Re-enable home platform stat
This commit is contained in:
parent
db492d8408
commit
8e8a98b78b
3 changed files with 1430 additions and 6 deletions
690
lib/backport_abcoll.py
Normal file
690
lib/backport_abcoll.py
Normal file
|
@ -0,0 +1,690 @@
|
|||
# Copyright 2007 Google, Inc. All Rights Reserved.
|
||||
# Licensed to PSF under a Contributor Agreement.
|
||||
|
||||
"""Abstract Base Classes (ABCs) for collections, according to PEP 3119.
|
||||
|
||||
DON'T USE THIS MODULE DIRECTLY! The classes here should be imported
|
||||
via collections; they are defined here only to alleviate certain
|
||||
bootstrapping issues. Unit tests are in test_collections.
|
||||
"""
|
||||
|
||||
from abc import ABCMeta, abstractmethod
|
||||
import sys
|
||||
|
||||
__all__ = ["Hashable", "Iterable", "Iterator",
|
||||
"Sized", "Container", "Callable",
|
||||
"Set", "MutableSet",
|
||||
"Mapping", "MutableMapping",
|
||||
"MappingView", "KeysView", "ItemsView", "ValuesView",
|
||||
"Sequence", "MutableSequence",
|
||||
]
|
||||
|
||||
### ONE-TRICK PONIES ###
|
||||
|
||||
def _hasattr(C, attr):
|
||||
try:
|
||||
return any(attr in B.__dict__ for B in C.__mro__)
|
||||
except AttributeError:
|
||||
# Old-style class
|
||||
return hasattr(C, attr)
|
||||
|
||||
|
||||
class Hashable:
|
||||
__metaclass__ = ABCMeta
|
||||
|
||||
@abstractmethod
|
||||
def __hash__(self):
|
||||
return 0
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Hashable:
|
||||
try:
|
||||
for B in C.__mro__:
|
||||
if "__hash__" in B.__dict__:
|
||||
if B.__dict__["__hash__"]:
|
||||
return True
|
||||
break
|
||||
except AttributeError:
|
||||
# Old-style class
|
||||
if getattr(C, "__hash__", None):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
|
||||
class Iterable:
|
||||
__metaclass__ = ABCMeta
|
||||
|
||||
@abstractmethod
|
||||
def __iter__(self):
|
||||
while False:
|
||||
yield None
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Iterable:
|
||||
if _hasattr(C, "__iter__"):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
Iterable.register(str)
|
||||
|
||||
|
||||
class Iterator(Iterable):
|
||||
|
||||
@abstractmethod
|
||||
def next(self):
|
||||
'Return the next item from the iterator. When exhausted, raise StopIteration'
|
||||
raise StopIteration
|
||||
|
||||
def __iter__(self):
|
||||
return self
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Iterator:
|
||||
if _hasattr(C, "next") and _hasattr(C, "__iter__"):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
|
||||
class Sized:
|
||||
__metaclass__ = ABCMeta
|
||||
|
||||
@abstractmethod
|
||||
def __len__(self):
|
||||
return 0
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Sized:
|
||||
if _hasattr(C, "__len__"):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
|
||||
class Container:
|
||||
__metaclass__ = ABCMeta
|
||||
|
||||
@abstractmethod
|
||||
def __contains__(self, x):
|
||||
return False
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Container:
|
||||
if _hasattr(C, "__contains__"):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
|
||||
class Callable:
|
||||
__metaclass__ = ABCMeta
|
||||
|
||||
@abstractmethod
|
||||
def __call__(self, *args, **kwds):
|
||||
return False
|
||||
|
||||
@classmethod
|
||||
def __subclasshook__(cls, C):
|
||||
if cls is Callable:
|
||||
if _hasattr(C, "__call__"):
|
||||
return True
|
||||
return NotImplemented
|
||||
|
||||
|
||||
### SETS ###
|
||||
|
||||
|
||||
class Set(Sized, Iterable, Container):
|
||||
"""A set is a finite, iterable container.
|
||||
|
||||
This class provides concrete generic implementations of all
|
||||
methods except for __contains__, __iter__ and __len__.
|
||||
|
||||
To override the comparisons (presumably for speed, as the
|
||||
semantics are fixed), redefine __le__ and __ge__,
|
||||
then the other operations will automatically follow suit.
|
||||
"""
|
||||
|
||||
def __le__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
return NotImplemented
|
||||
if len(self) > len(other):
|
||||
return False
|
||||
for elem in self:
|
||||
if elem not in other:
|
||||
return False
|
||||
return True
|
||||
|
||||
def __lt__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
return NotImplemented
|
||||
return len(self) < len(other) and self.__le__(other)
|
||||
|
||||
def __gt__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
return NotImplemented
|
||||
return len(self) > len(other) and self.__ge__(other)
|
||||
|
||||
def __ge__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
return NotImplemented
|
||||
if len(self) < len(other):
|
||||
return False
|
||||
for elem in other:
|
||||
if elem not in self:
|
||||
return False
|
||||
return True
|
||||
|
||||
def __eq__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
return NotImplemented
|
||||
return len(self) == len(other) and self.__le__(other)
|
||||
|
||||
def __ne__(self, other):
|
||||
return not (self == other)
|
||||
|
||||
@classmethod
|
||||
def _from_iterable(cls, it):
|
||||
'''Construct an instance of the class from any iterable input.
|
||||
|
||||
Must override this method if the class constructor signature
|
||||
does not accept an iterable for an input.
|
||||
'''
|
||||
return cls(it)
|
||||
|
||||
def __and__(self, other):
|
||||
if not isinstance(other, Iterable):
|
||||
return NotImplemented
|
||||
return self._from_iterable(value for value in other if value in self)
|
||||
|
||||
__rand__ = __and__
|
||||
|
||||
def isdisjoint(self, other):
|
||||
'Return True if two sets have a null intersection.'
|
||||
for value in other:
|
||||
if value in self:
|
||||
return False
|
||||
return True
|
||||
|
||||
def __or__(self, other):
|
||||
if not isinstance(other, Iterable):
|
||||
return NotImplemented
|
||||
chain = (e for s in (self, other) for e in s)
|
||||
return self._from_iterable(chain)
|
||||
|
||||
__ror__ = __or__
|
||||
|
||||
def __sub__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
if not isinstance(other, Iterable):
|
||||
return NotImplemented
|
||||
other = self._from_iterable(other)
|
||||
return self._from_iterable(value for value in self
|
||||
if value not in other)
|
||||
|
||||
def __rsub__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
if not isinstance(other, Iterable):
|
||||
return NotImplemented
|
||||
other = self._from_iterable(other)
|
||||
return self._from_iterable(value for value in other
|
||||
if value not in self)
|
||||
|
||||
def __xor__(self, other):
|
||||
if not isinstance(other, Set):
|
||||
if not isinstance(other, Iterable):
|
||||
return NotImplemented
|
||||
other = self._from_iterable(other)
|
||||
return (self - other) | (other - self)
|
||||
|
||||
__rxor__ = __xor__
|
||||
|
||||
# Sets are not hashable by default, but subclasses can change this
|
||||
__hash__ = None
|
||||
|
||||
def _hash(self):
|
||||
"""Compute the hash value of a set.
|
||||
|
||||
Note that we don't define __hash__: not all sets are hashable.
|
||||
But if you define a hashable set type, its __hash__ should
|
||||
call this function.
|
||||
|
||||
This must be compatible __eq__.
|
||||
|
||||
All sets ought to compare equal if they contain the same
|
||||
elements, regardless of how they are implemented, and
|
||||
regardless of the order of the elements; so there's not much
|
||||
freedom for __eq__ or __hash__. We match the algorithm used
|
||||
by the built-in frozenset type.
|
||||
"""
|
||||
MAX = sys.maxint
|
||||
MASK = 2 * MAX + 1
|
||||
n = len(self)
|
||||
h = 1927868237 * (n + 1)
|
||||
h &= MASK
|
||||
for x in self:
|
||||
hx = hash(x)
|
||||
h ^= (hx ^ (hx << 16) ^ 89869747) * 3644798167
|
||||
h &= MASK
|
||||
h = h * 69069 + 907133923
|
||||
h &= MASK
|
||||
if h > MAX:
|
||||
h -= MASK + 1
|
||||
if h == -1:
|
||||
h = 590923713
|
||||
return h
|
||||
|
||||
Set.register(frozenset)
|
||||
|
||||
|
||||
class MutableSet(Set):
|
||||
"""A mutable set is a finite, iterable container.
|
||||
|
||||
This class provides concrete generic implementations of all
|
||||
methods except for __contains__, __iter__, __len__,
|
||||
add(), and discard().
|
||||
|
||||
To override the comparisons (presumably for speed, as the
|
||||
semantics are fixed), all you have to do is redefine __le__ and
|
||||
then the other operations will automatically follow suit.
|
||||
"""
|
||||
|
||||
@abstractmethod
|
||||
def add(self, value):
|
||||
"""Add an element."""
|
||||
raise NotImplementedError
|
||||
|
||||
@abstractmethod
|
||||
def discard(self, value):
|
||||
"""Remove an element. Do not raise an exception if absent."""
|
||||
raise NotImplementedError
|
||||
|
||||
def remove(self, value):
|
||||
"""Remove an element. If not a member, raise a KeyError."""
|
||||
if value not in self:
|
||||
raise KeyError(value)
|
||||
self.discard(value)
|
||||
|
||||
def pop(self):
|
||||
"""Return the popped value. Raise KeyError if empty."""
|
||||
it = iter(self)
|
||||
try:
|
||||
value = next(it)
|
||||
except StopIteration:
|
||||
raise KeyError
|
||||
self.discard(value)
|
||||
return value
|
||||
|
||||
def clear(self):
|
||||
"""This is slow (creates N new iterators!) but effective."""
|
||||
try:
|
||||
while True:
|
||||
self.pop()
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
def __ior__(self, it):
|
||||
for value in it:
|
||||
self.add(value)
|
||||
return self
|
||||
|
||||
def __iand__(self, it):
|
||||
for value in (self - it):
|
||||
self.discard(value)
|
||||
return self
|
||||
|
||||
def __ixor__(self, it):
|
||||
if it is self:
|
||||
self.clear()
|
||||
else:
|
||||
if not isinstance(it, Set):
|
||||
it = self._from_iterable(it)
|
||||
for value in it:
|
||||
if value in self:
|
||||
self.discard(value)
|
||||
else:
|
||||
self.add(value)
|
||||
return self
|
||||
|
||||
def __isub__(self, it):
|
||||
if it is self:
|
||||
self.clear()
|
||||
else:
|
||||
for value in it:
|
||||
self.discard(value)
|
||||
return self
|
||||
|
||||
MutableSet.register(set)
|
||||
|
||||
|
||||
### MAPPINGS ###
|
||||
|
||||
|
||||
class Mapping(Sized, Iterable, Container):
|
||||
|
||||
"""A Mapping is a generic container for associating key/value
|
||||
pairs.
|
||||
|
||||
This class provides concrete generic implementations of all
|
||||
methods except for __getitem__, __iter__, and __len__.
|
||||
|
||||
"""
|
||||
|
||||
@abstractmethod
|
||||
def __getitem__(self, key):
|
||||
raise KeyError
|
||||
|
||||
def get(self, key, default=None):
|
||||
'D.get(k[,d]) -> D[k] if k in D, else d. d defaults to None.'
|
||||
try:
|
||||
return self[key]
|
||||
except KeyError:
|
||||
return default
|
||||
|
||||
def __contains__(self, key):
|
||||
try:
|
||||
self[key]
|
||||
except KeyError:
|
||||
return False
|
||||
else:
|
||||
return True
|
||||
|
||||
def iterkeys(self):
|
||||
'D.iterkeys() -> an iterator over the keys of D'
|
||||
return iter(self)
|
||||
|
||||
def itervalues(self):
|
||||
'D.itervalues() -> an iterator over the values of D'
|
||||
for key in self:
|
||||
yield self[key]
|
||||
|
||||
def iteritems(self):
|
||||
'D.iteritems() -> an iterator over the (key, value) items of D'
|
||||
for key in self:
|
||||
yield (key, self[key])
|
||||
|
||||
def keys(self):
|
||||
"D.keys() -> list of D's keys"
|
||||
return list(self)
|
||||
|
||||
def items(self):
|
||||
"D.items() -> list of D's (key, value) pairs, as 2-tuples"
|
||||
return [(key, self[key]) for key in self]
|
||||
|
||||
def values(self):
|
||||
"D.values() -> list of D's values"
|
||||
return [self[key] for key in self]
|
||||
|
||||
# Mappings are not hashable by default, but subclasses can change this
|
||||
__hash__ = None
|
||||
|
||||
def __eq__(self, other):
|
||||
if not isinstance(other, Mapping):
|
||||
return NotImplemented
|
||||
return dict(self.items()) == dict(other.items())
|
||||
|
||||
def __ne__(self, other):
|
||||
return not (self == other)
|
||||
|
||||
class MappingView(Sized):
|
||||
|
||||
def __init__(self, mapping):
|
||||
self._mapping = mapping
|
||||
|
||||
def __len__(self):
|
||||
return len(self._mapping)
|
||||
|
||||
def __repr__(self):
|
||||
return '{0.__class__.__name__}({0._mapping!r})'.format(self)
|
||||
|
||||
|
||||
class KeysView(MappingView, Set):
|
||||
|
||||
@classmethod
|
||||
def _from_iterable(self, it):
|
||||
return set(it)
|
||||
|
||||
def __contains__(self, key):
|
||||
return key in self._mapping
|
||||
|
||||
def __iter__(self):
|
||||
for key in self._mapping:
|
||||
yield key
|
||||
|
||||
|
||||
class ItemsView(MappingView, Set):
|
||||
|
||||
@classmethod
|
||||
def _from_iterable(self, it):
|
||||
return set(it)
|
||||
|
||||
def __contains__(self, item):
|
||||
key, value = item
|
||||
try:
|
||||
v = self._mapping[key]
|
||||
except KeyError:
|
||||
return False
|
||||
else:
|
||||
return v == value
|
||||
|
||||
def __iter__(self):
|
||||
for key in self._mapping:
|
||||
yield (key, self._mapping[key])
|
||||
|
||||
|
||||
class ValuesView(MappingView):
|
||||
|
||||
def __contains__(self, value):
|
||||
for key in self._mapping:
|
||||
if value == self._mapping[key]:
|
||||
return True
|
||||
return False
|
||||
|
||||
def __iter__(self):
|
||||
for key in self._mapping:
|
||||
yield self._mapping[key]
|
||||
|
||||
|
||||
class MutableMapping(Mapping):
|
||||
|
||||
"""A MutableMapping is a generic container for associating
|
||||
key/value pairs.
|
||||
|
||||
This class provides concrete generic implementations of all
|
||||
methods except for __getitem__, __setitem__, __delitem__,
|
||||
__iter__, and __len__.
|
||||
|
||||
"""
|
||||
|
||||
@abstractmethod
|
||||
def __setitem__(self, key, value):
|
||||
raise KeyError
|
||||
|
||||
@abstractmethod
|
||||
def __delitem__(self, key):
|
||||
raise KeyError
|
||||
|
||||
__marker = object()
|
||||
|
||||
def pop(self, key, default=__marker):
|
||||
'''D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
|
||||
If key is not found, d is returned if given, otherwise KeyError is raised.
|
||||
'''
|
||||
try:
|
||||
value = self[key]
|
||||
except KeyError:
|
||||
if default is self.__marker:
|
||||
raise
|
||||
return default
|
||||
else:
|
||||
del self[key]
|
||||
return value
|
||||
|
||||
def popitem(self):
|
||||
'''D.popitem() -> (k, v), remove and return some (key, value) pair
|
||||
as a 2-tuple; but raise KeyError if D is empty.
|
||||
'''
|
||||
try:
|
||||
key = next(iter(self))
|
||||
except StopIteration:
|
||||
raise KeyError
|
||||
value = self[key]
|
||||
del self[key]
|
||||
return key, value
|
||||
|
||||
def clear(self):
|
||||
'D.clear() -> None. Remove all items from D.'
|
||||
try:
|
||||
while True:
|
||||
self.popitem()
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
def update(*args, **kwds):
|
||||
''' D.update([E, ]**F) -> None. Update D from mapping/iterable E and F.
|
||||
If E present and has a .keys() method, does: for k in E: D[k] = E[k]
|
||||
If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v
|
||||
In either case, this is followed by: for k, v in F.items(): D[k] = v
|
||||
'''
|
||||
if len(args) > 2:
|
||||
raise TypeError("update() takes at most 2 positional "
|
||||
"arguments ({args} given)".format(args=len(args)))
|
||||
elif not args:
|
||||
raise TypeError("update() takes at least 1 argument (0 given)")
|
||||
self = args[0]
|
||||
other = args[1] if len(args) >= 2 else ()
|
||||
|
||||
if isinstance(other, Mapping):
|
||||
for key in other:
|
||||
self[key] = other[key]
|
||||
elif hasattr(other, "keys"):
|
||||
for key in other.keys():
|
||||
self[key] = other[key]
|
||||
else:
|
||||
for key, value in other:
|
||||
self[key] = value
|
||||
for key, value in kwds.items():
|
||||
self[key] = value
|
||||
|
||||
def setdefault(self, key, default=None):
|
||||
'D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D'
|
||||
try:
|
||||
return self[key]
|
||||
except KeyError:
|
||||
self[key] = default
|
||||
return default
|
||||
|
||||
MutableMapping.register(dict)
|
||||
|
||||
|
||||
### SEQUENCES ###
|
||||
|
||||
|
||||
class Sequence(Sized, Iterable, Container):
|
||||
"""All the operations on a read-only sequence.
|
||||
|
||||
Concrete subclasses must override __new__ or __init__,
|
||||
__getitem__, and __len__.
|
||||
"""
|
||||
|
||||
@abstractmethod
|
||||
def __getitem__(self, index):
|
||||
raise IndexError
|
||||
|
||||
def __iter__(self):
|
||||
i = 0
|
||||
try:
|
||||
while True:
|
||||
v = self[i]
|
||||
yield v
|
||||
i += 1
|
||||
except IndexError:
|
||||
return
|
||||
|
||||
def __contains__(self, value):
|
||||
for v in self:
|
||||
if v == value:
|
||||
return True
|
||||
return False
|
||||
|
||||
def __reversed__(self):
|
||||
for i in reversed(range(len(self))):
|
||||
yield self[i]
|
||||
|
||||
def index(self, value):
|
||||
'''S.index(value) -> integer -- return first index of value.
|
||||
Raises ValueError if the value is not present.
|
||||
'''
|
||||
for i, v in enumerate(self):
|
||||
if v == value:
|
||||
return i
|
||||
raise ValueError
|
||||
|
||||
def count(self, value):
|
||||
'S.count(value) -> integer -- return number of occurrences of value'
|
||||
return sum(1 for v in self if v == value)
|
||||
|
||||
Sequence.register(tuple)
|
||||
Sequence.register(basestring)
|
||||
Sequence.register(buffer)
|
||||
Sequence.register(xrange)
|
||||
|
||||
|
||||
class MutableSequence(Sequence):
|
||||
|
||||
"""All the operations on a read-only sequence.
|
||||
|
||||
Concrete subclasses must provide __new__ or __init__,
|
||||
__getitem__, __setitem__, __delitem__, __len__, and insert().
|
||||
|
||||
"""
|
||||
|
||||
@abstractmethod
|
||||
def __setitem__(self, index, value):
|
||||
raise IndexError
|
||||
|
||||
@abstractmethod
|
||||
def __delitem__(self, index):
|
||||
raise IndexError
|
||||
|
||||
@abstractmethod
|
||||
def insert(self, index, value):
|
||||
'S.insert(index, object) -- insert object before index'
|
||||
raise IndexError
|
||||
|
||||
def append(self, value):
|
||||
'S.append(object) -- append object to the end of the sequence'
|
||||
self.insert(len(self), value)
|
||||
|
||||
def reverse(self):
|
||||
'S.reverse() -- reverse *IN PLACE*'
|
||||
n = len(self)
|
||||
for i in range(n//2):
|
||||
self[i], self[n-i-1] = self[n-i-1], self[i]
|
||||
|
||||
def extend(self, values):
|
||||
'S.extend(iterable) -- extend sequence by appending elements from the iterable'
|
||||
for v in values:
|
||||
self.append(v)
|
||||
|
||||
def pop(self, index=-1):
|
||||
'''S.pop([index]) -> item -- remove and return item at index (default last).
|
||||
Raise IndexError if list is empty or index is out of range.
|
||||
'''
|
||||
v = self[index]
|
||||
del self[index]
|
||||
return v
|
||||
|
||||
def remove(self, value):
|
||||
'''S.remove(value) -- remove first occurrence of value.
|
||||
Raise ValueError if the value is not present.
|
||||
'''
|
||||
del self[self.index(value)]
|
||||
|
||||
def __iadd__(self, values):
|
||||
self.extend(values)
|
||||
return self
|
||||
|
||||
MutableSequence.register(list)
|
Loading…
Add table
Add a link
Reference in a new issue