mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 19:40:18 +00:00
70 lines
1.6 KiB
Python
70 lines
1.6 KiB
Python
def Counter(iterable):
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a = {}
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for x in iterable:
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if x in a:
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a[x] += 1
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else:
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a[x] = 1
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return a
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class defaultdict:
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def __init__(self, default_factory) -> None:
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self.default_factory = default_factory
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self._a = {}
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def __getitem__(self, key):
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if key not in self._a:
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self._a[key] = self.default_factory()
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return self._a[key]
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def __setitem__(self, key, value):
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self._a[key] = value
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def __delitem__(self, key):
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del self._a[key]
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def __repr__(self) -> str:
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return f"defaultdict({self.default_factory}, {self._a})"
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def __eq__(self, __o: object) -> bool:
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if not isinstance(__o, defaultdict):
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return False
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if self.default_factory != __o.default_factory:
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return False
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return self._a == __o._a
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def __iter__(self):
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return iter(self._a)
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def __contains__(self, key):
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return key in self._a
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def __len__(self):
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return len(self._a)
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def keys(self):
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return self._a.keys()
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def values(self):
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return self._a.values()
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def items(self):
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return self._a.items()
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def pop(self, *args):
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return self._a.pop(*args)
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def clear(self):
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self._a.clear()
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def copy(self):
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new_dd = defaultdict(self.default_factory)
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new_dd._a = self._a.copy()
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return new_dd
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def get(self, key, default):
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return self._a.get(key, default)
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def update(self, other):
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self._a.update(other)
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