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145 lines
3.7 KiB
Python
145 lines
3.7 KiB
Python
from collections.abc import ItemsView, Iterable, KeysView, Set, ValuesView
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def _abc_itemsview_register(view_cls):
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ItemsView.register(view_cls)
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def _abc_keysview_register(view_cls):
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KeysView.register(view_cls)
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def _abc_valuesview_register(view_cls):
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ValuesView.register(view_cls)
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def _viewbaseset_richcmp(view, other, op):
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if op == 0: # <
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if not isinstance(other, Set):
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return NotImplemented
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return len(view) < len(other) and view <= other
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elif op == 1: # <=
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if not isinstance(other, Set):
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return NotImplemented
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if len(view) > len(other):
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return False
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for elem in view:
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if elem not in other:
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return False
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return True
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elif op == 2: # ==
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if not isinstance(other, Set):
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return NotImplemented
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return len(view) == len(other) and view <= other
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elif op == 3: # !=
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return not view == other
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elif op == 4: # >
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if not isinstance(other, Set):
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return NotImplemented
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return len(view) > len(other) and view >= other
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elif op == 5: # >=
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if not isinstance(other, Set):
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return NotImplemented
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if len(view) < len(other):
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return False
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for elem in other:
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if elem not in view:
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return False
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return True
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def _viewbaseset_and(view, other):
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if not isinstance(other, Iterable):
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return NotImplemented
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if isinstance(view, Set):
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view = set(iter(view))
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if isinstance(other, Set):
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other = set(iter(other))
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if not isinstance(other, Set):
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other = set(iter(other))
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return view & other
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def _viewbaseset_or(view, other):
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if not isinstance(other, Iterable):
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return NotImplemented
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if isinstance(view, Set):
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view = set(iter(view))
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if isinstance(other, Set):
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other = set(iter(other))
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if not isinstance(other, Set):
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other = set(iter(other))
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return view | other
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def _viewbaseset_sub(view, other):
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if not isinstance(other, Iterable):
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return NotImplemented
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if isinstance(view, Set):
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view = set(iter(view))
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if isinstance(other, Set):
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other = set(iter(other))
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if not isinstance(other, Set):
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other = set(iter(other))
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return view - other
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def _viewbaseset_xor(view, other):
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if not isinstance(other, Iterable):
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return NotImplemented
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if isinstance(view, Set):
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view = set(iter(view))
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if isinstance(other, Set):
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other = set(iter(other))
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if not isinstance(other, Set):
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other = set(iter(other))
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return view ^ other
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def _itemsview_isdisjoint(view, other):
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"Return True if two sets have a null intersection."
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for v in other:
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if v in view:
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return False
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return True
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def _itemsview_repr(view):
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lst = []
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for k, v in view:
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lst.append("{!r}: {!r}".format(k, v))
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body = ", ".join(lst)
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return "{}({})".format(view.__class__.__name__, body)
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def _keysview_isdisjoint(view, other):
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"Return True if two sets have a null intersection."
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for k in other:
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if k in view:
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return False
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return True
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def _keysview_repr(view):
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lst = []
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for k in view:
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lst.append("{!r}".format(k))
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body = ", ".join(lst)
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return "{}({})".format(view.__class__.__name__, body)
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def _valuesview_repr(view):
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lst = []
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for v in view:
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lst.append("{!r}".format(v))
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body = ", ".join(lst)
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return "{}({})".format(view.__class__.__name__, body)
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def _mdrepr(md):
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lst = []
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for k, v in md.items():
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lst.append("'{}': {!r}".format(k, v))
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body = ", ".join(lst)
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return "<{}({})>".format(md.__class__.__name__, body)
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