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import sys
from collections.abc import ItemsView, Iterable, KeysView, Set, ValuesView
if sys.version_info >= (3, 11):
from typing import assert_never
else:
from typing_extensions import assert_never
def _abc_itemsview_register(view_cls):
ItemsView.register(view_cls)
def _abc_keysview_register(view_cls):
KeysView.register(view_cls)
def _abc_valuesview_register(view_cls):
ValuesView.register(view_cls)
def _viewbaseset_richcmp(view, other, op):
if op == 0: # <
if not isinstance(other, Set):
return NotImplemented
return len(view) < len(other) and view <= other
elif op == 1: # <=
if not isinstance(other, Set):
return NotImplemented
if len(view) > len(other):
return False
for elem in view:
if elem not in other:
return False
return True
elif op == 2: # ==
if not isinstance(other, Set):
return NotImplemented
return len(view) == len(other) and view <= other
elif op == 3: # !=
return not view == other
elif op == 4: # >
if not isinstance(other, Set):
return NotImplemented
return len(view) > len(other) and view >= other
elif op == 5: # >=
if not isinstance(other, Set):
return NotImplemented
if len(view) < len(other):
return False
for elem in other:
if elem not in view:
return False
return True
else: # pragma: no cover
assert_never(op)
def _viewbaseset_and(view, other):
if not isinstance(other, Iterable):
return NotImplemented
if isinstance(view, Set):
view = set(iter(view))
if isinstance(other, Set):
other = set(iter(other))
if not isinstance(other, Set):
other = set(iter(other))
return view & other
def _viewbaseset_or(view, other):
if not isinstance(other, Iterable):
return NotImplemented
if isinstance(view, Set):
view = set(iter(view))
if isinstance(other, Set):
other = set(iter(other))
if not isinstance(other, Set):
other = set(iter(other))
return view | other
def _viewbaseset_sub(view, other):
if not isinstance(other, Iterable):
return NotImplemented
if isinstance(view, Set):
view = set(iter(view))
if isinstance(other, Set):
other = set(iter(other))
if not isinstance(other, Set):
other = set(iter(other))
return view - other
def _viewbaseset_xor(view, other):
if not isinstance(other, Iterable):
return NotImplemented
if isinstance(view, Set):
view = set(iter(view))
if isinstance(other, Set):
other = set(iter(other))
if not isinstance(other, Set):
other = set(iter(other))
return view ^ other
def _itemsview_isdisjoint(view, other):
"Return True if two sets have a null intersection."
for v in other:
if v in view:
return False
return True
def _itemsview_repr(view):
lst = []
for k, v in view:
lst.append("{!r}: {!r}".format(k, v))
body = ", ".join(lst)
return "{}({})".format(view.__class__.__name__, body)
def _keysview_isdisjoint(view, other):
"Return True if two sets have a null intersection."
for k in other:
if k in view:
return False
return True
def _keysview_repr(view):
lst = []
for k in view:
lst.append("{!r}".format(k))
body = ", ".join(lst)
return "{}({})".format(view.__class__.__name__, body)
def _valuesview_repr(view):
lst = []
for v in view:
lst.append("{!r}".format(v))
body = ", ".join(lst)
return "{}({})".format(view.__class__.__name__, body)
def _mdrepr(md):
lst = []
for k, v in md.items():
lst.append("'{}': {!r}".format(k, v))
body = ", ".join(lst)
return "<{}({})>".format(md.__class__.__name__, body)