[Python] How do I test if int value exists in Python Enum without using try/catch?

Using the Python Enum class, is there a way to test if an Enum contains a specific int value without using try/catch?

With the following class:

from enum import Enum

class Fruit(Enum):
Apple = 4
Orange = 5
Pear = 6


How can I test for the value 6 (returning true), or the value 7 (returning false)?

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