do_maths.py

'''
Created on Apr 25, 2013

@author: abhsriva
'''

class Do_Mathematics:

    def __init__(self, a, b):
        self.a = a
        self.b = b
    
    def sum(self):
        return self.a+self.b
    
    def sub(self):
        return self.a-self.b
    
    def check_greater(self):
        if self.a > self.b:
            print "a is greater"
        else:
            print "b is greater"
        
    def _check_if_zero(self, num):
        if num == 0:
            return True
        return False
    
    def div(self):
        if self._check_if_zero(self.b):
            print 'Can\'t divide'
        else:
            return float(self.a)/self.b