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imunify360
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python3.11
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frozenlist
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Filename :
_frozenlist.pyx
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import sys import types from collections.abc import MutableSequence cdef class FrozenList: if sys.version_info >= (3, 9): __class_getitem__ = classmethod(types.GenericAlias) else: @classmethod def __class_getitem__(cls): return cls cdef readonly bint frozen cdef list _items def __init__(self, items=None): self.frozen = False if items is not None: items = list(items) else: items = [] self._items = items cdef object _check_frozen(self): if self.frozen: raise RuntimeError("Cannot modify frozen list.") cdef inline object _fast_len(self): return len(self._items) def freeze(self): self.frozen = True def __getitem__(self, index): return self._items[index] def __setitem__(self, index, value): self._check_frozen() self._items[index] = value def __delitem__(self, index): self._check_frozen() del self._items[index] def __len__(self): return self._fast_len() def __iter__(self): return self._items.__iter__() def __reversed__(self): return self._items.__reversed__() def __richcmp__(self, other, op): if op == 0: # < return list(self) < other if op == 1: # <= return list(self) <= other if op == 2: # == return list(self) == other if op == 3: # != return list(self) != other if op == 4: # > return list(self) > other if op == 5: # => return list(self) >= other def insert(self, pos, item): self._check_frozen() self._items.insert(pos, item) def __contains__(self, item): return item in self._items def __iadd__(self, items): self._check_frozen() self._items += list(items) return self def index(self, item): return self._items.index(item) def remove(self, item): self._check_frozen() self._items.remove(item) def clear(self): self._check_frozen() self._items.clear() def extend(self, items): self._check_frozen() self._items += list(items) def reverse(self): self._check_frozen() self._items.reverse() def pop(self, index=-1): self._check_frozen() return self._items.pop(index) def append(self, item): self._check_frozen() return self._items.append(item) def count(self, item): return self._items.count(item) def __repr__(self): return '<FrozenList(frozen={}, {!r})>'.format(self.frozen, self._items) def __hash__(self): if self.frozen: return hash(tuple(self._items)) else: raise RuntimeError("Cannot hash unfrozen list.") MutableSequence.register(FrozenList)