/ __div__(bc ** __pow__( it is naturalin most but not all casesfor these methods to return an object of the same type as the operands similarlythere are special methods for comparing objects,as followsa = __eq__(ba ! __ne__(ba __lt__(ba < __le__(ba __gt__(ba > __ge__(bthese methods should be implemented to return true or falseto be consistent with the usual behavior of the comparison operators the actual contents of the special method are in all cases entirely up to the programmer the only special thing about the methods is their namewhich ensures that they are automatically called by various operators for instanceif you try to multiply two objects with statement such as *bpython will look for method named __mul__ in the instance if such method existsit will be called with the instance as the argumentand whatever the method __mul__ returns will be the result of our multiplication operation the __repr__ special method the last special method we will consider here is method named __repr__which is similar to __str__ in the sense that it should return string with information about the object the difference is thatwhile __str__ should provide human-readable informationthe __repr__ string will contain all the information necessary to recreate the object for an object athe __repr__ method is called if we call repr( )where repr is built-in function the intended function of repr is such that eval(repr( )=athat isrunning the string output by __repr__ should recreate to illustrate its uselet us add __repr__ method to the class barometric from the start of the class barometricdef __call__(selfh)return self exp(-self *self * /(self *self )def __str__(self)return ' exp(- * * /( * )) {self }def __repr__(self)