Apply comparison operator from string

Question

I have a class Foo which contains one of math comparison operations op as a string: '<', '>' or '='. Also Foo contains a number val.

class Foo:
  def __init__(self, operation: str, value: int):
    self.op = operation
    self.val = value

In my code I read a number from input and compare it to Foo's class exemplar value using Foo's contained operation:

f = Foo('<', 15)
to_check = int(input())

if f.op == '<':
  if to_check < f.val:
    # ...
elif f.op == '>':
  if to_check > f.val:
    # ...
elif f.op == '=':
  if to_check == f.val:
    #...  

Is there any way to do it simpler or more elegant?

Answer 1

This is more elegant and works just fine :

class Foo:

    def __init__(self, op: str, val: int):
        self.op = op
        self.val = val

    def check(self, other):
        if isinstance(other, (int, float)):
            if self.op == '<': return self.val > other
            if self.op == '>': return self.val < other
            if self.op == '=': return self.val == other
            if self.op == '!=': return self.val != other
            if self.op == '>=': return self.val <= other
            if self.op == '<=': return self.val >= other
        return NotImplemented

f.check(other) check the condition of the contained operation and returns it, in other words:

f = Foo('<', 15)
if f.check(14):
    print('ok')

The condition is True because 14 is less than 15