How do the data types bool and int interact in Python, and how are they related?

In Python, the bool type is a subclass of int. This means that the values True and False behave like the numbers 1 and 0 respectively. For example, boolean values can be used in arithmetic operations:

print(True + 1)  # Outputs 2
print(False * 10) # Outputs 0

Also, in comparisons:

print(isinstance(True, int))  # True
print(True == 1)              # True

Thus, bool is closely related to int and can be used in contexts where integer values are expected.