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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 validate_config_must_have(config, required_keys):
 """ Validate a config dictionary to make sure it has all of the specified keys Args: config: the config to validate. required_keys: the list of possible keys that config must include. Raises: Exception if the config does not have any of them. """

  missing_keys = set(required_keys) - set(config)
  if len(missing_keys) > 0:
    raise Exception('Invalid config with missing keys "%s"' % ', '.join(missing_keys))