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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 password_set(username=None, password=None):
 """ Stores a password in a keychain for a particular environment and configuration parameter pair. """

    result = keyring.set_password('supernova', username, password)

    # NOTE: keyring returns None when the storage is successful.  That's weird.
    if result is None:
        return True
    else:
        return False