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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def resolve(self, key):
 """ Resolve a key to a factory. Attempts to resolve explicit bindings and entry points, preferring explicit bindings. :raises NotBoundError: if the key cannot be resolved """

        try:
            return self._resolve_from_binding(key)
        except NotBoundError:
            return self._resolve_from_entry_point(key)