Function _deepcopy_frozendict

Lib/copy.py:206–218

(x, memo, deepcopy=deepcopy)

d[dict] = _deepcopy_dict

def _deepcopy_frozendict(x, memo, deepcopy=deepcopy):
    y = {}
    for key, value in x.items():
        y[deepcopy(key, memo)] = deepcopy(value, memo)

    # We're not going to put the frozendict in the memo, but it's still
    # important we check for it, in case the frozendict contains recursive
    # mutable structures.
    try:
        return memo[id(x)]
    except KeyError:
        pass
    return frozendict(y)
d[frozendict] = _deepcopy_frozendict

def _deepcopy_method(x, memo): # Copy instance methods