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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 dump(obj, f, preserve=False):
 """Write dict object into file :param obj: the object to be dumped into toml :param f: the file object :param preserve: optional flag to preserve the inline table in result """

    if not f.write:
        raise TypeError('You can only dump an object into a file object')
    encoder = Encoder(f, preserve=preserve)
    return encoder.write_dict(obj)