Specifying true_values and false_values for Booltype

[Pujeeth]

Unable to specify "true_vlaues" and "false_values" from the code rather than changing the values in the package, is there a way to specify from the initialization of "type_guess" function itself to declare Booltype to consider predefined "true_values" i.e.

types = type_guess(row_set,[types.StringType, types.IntegerType, types.DecimalType, types.BoolType(true_values = ('yes'),false_values=('no'))], strict=True)

Instead of changing the "true_value" in site-packages/messytables/types.py, How can I pass it in the calling code.