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  1. #
  2. # Operator Overloading
  3. #
  4. class Quantity:
  5.  
  6.       def __init__(self, value):
  7.           self.value = value
  8.  
  9.       def __add__(self, other):
  10.            new_value = self.value + other.value
  11.            return Quantity(new_value)
  12.  
  13.       def __sub__(self, other):
  14.           new_value = self.value - other.value
  15.           return Quantity(new_value)
  16.  
  17.       def __mul__(self, other):
  18.           new_value = self.value * other.value
  19.           return Quantity(new_value)
  20.  
  21.       def __str__(self):
  22.           return "Quantity["+ str(self.value) +"]"
  23.  
  24.       def __eq__(self, other):
  25.           return self.value == other.value
  26.  
  27.       def __gt__(self, other):
  28.           return self.value > other.value
  29.  
  30.       def __ge__(self, other):
  31.           return self.value >= other.value
  32.  
  33.       def __lt__(self, other):
  34.           return self.value < other.value
  35.  
  36.       def __le__(self, other):
  37.           return self.value <= other.value
  38. def main():
  39.     q1 = Quantity(10)
  40.     q2 = Quantity(20)
  41.     q3 = q1 + q2
  42.     print(q3)
  43.     print(q1<q2)
  44. main()
Success #stdin #stdout 0.02s 9264KB
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Quantity[30]
True
https://ideone.com/cQfVX5
Operator Overloading
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
secret

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