code: def data_source_and_uncertainty_flags(self, value=None):
          
          if value is not None:
              try:
                  value = str(value)
              except ValueError:
                  raise ValueError(
                      'value {} need to be of type str '
                      'for field `data_source_and_uncertainty_flags`'.format(value))
              if ',' in value:
                  raise ValueError(
                      'value should not contain a comma '
                      'for field `data_source_and_uncertainty_flags`')
  
          self._data_source_and_uncertainty_flags = value
docs: Corresponds to IDD Field `data_source_and_uncertainty_flags` Initial
          day of weather file is checked by EnergyPlus for validity (as shown
          below) Each field is checked for "missing" as shown below. Reasonable
          values, calculated values or the last "good" value is substituted.
  
          Args:
              value (str): value for IDD Field `data_source_and_uncertainty_flags`
                  if `value` is None it will not be checked against the
                  specification and is assumed to be a missing value
  
          Raises:
              ValueError: if `value` is not a valid value