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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 encode_basic_auth(username, password):
 """ Encode basic auth credentials. """

    return "Basic {}".format(
        b64encode(
            "{}:{}".format(
                username,
                password,
            ).encode("utf-8")
        ).decode("utf-8")
    )