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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 write_config(path, config):
 """ Write the config with a little post-converting formatting. """

    config_as_string = to_nice_yaml(config)

    config_as_string = "---\n" + config_as_string

    string_to_file(path, config_as_string)