class Femut:
    def pearson(Length, Sex='Male' or 'Female'):
        if Sex == 'Male' and Length > 0:
            result = 81.306 + 1.880 * Length
        elif Sex == 'Female' and Length > 0:
            result = 72.844 + 1.945 * Length
        else :
            pass
        return result

    def tng(Length):
        if Length > 0:
            result = 2.15 * Length + 72.57
        else :
            pass
        return result

    def huzii(Length, Sex='Male' or 'Female'):
        if Sex == 'Male' and Length > 0:
            result = (2.47 * (Length*10) + 549.01)/10
        elif Sex == 'Female' and Length > 0:
            result = (2.24 * (Length*10) + 610.43)/10
        else :
            pass
        return result