python operator overloading

1class Vector:
2  def __init__(self, x, y):
3    self.x = x
4    self.y = y
5   
6   def __add__(self, other):
7      return Vector(self.x + other.x, self.y + other.y)

1class GridPoint:
2    def __init__(self, x, y):  
3        self.x = x  
4        self.y = y  
5  
6    def __add__(self, other):  	# Overloading + operator
7        return GridPoint(self.x + other.x, self.y + other.y)
8  
9    def __str__(self):  		# Overloading "to string" (for printing)
10        string = str(self.x)  
11        string = string + ", " + str(self.y)  
12        return string  
13   	def __gt__(self, other):  	# Overloading > operator (Greater Than)
14       	return self.x > other.x    
15point1 = GridPoint(3, 5) 
16point2 = GridPoint(-1, 4)
17point3 = point1 + point2  	# Add two points using __add__() method
18print(point3)  				# Print the attributes using __str__() method
19if point1 > point2:  		# Compares using __gt__() method
20   print('point1 is greater than point2')  

1def __add__(self, other):
2    if isinstance(other, self.__class__):
3        return self.x + other.x
4    elif isinstance(other, int):
5        return self.x + other
6    else:
7        raise TypeError("unsupported operand type(s) for +: '{}' and '{}'").format(self.__class__, type(other))

1class MyClass:
2  def __add__(self, b):
3    return 5 + b

1(3, 5)
2