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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 from_dict(cls, dict_in):
 """Initialize the class from a dict. :param dict_in: The dictionary that contains the item content. Required fields are listed class variable by that name :type dict_in: dict """

        kwargs = dict_in.copy()
        args = [kwargs.pop(key) for key in cls.required_fields]
        return cls(*args, **kwargs)