At the same time, this result is entirely dependent on the types involved. For example, "1.0 > 0" has a well-defined answer, and Python returns it. Considering

At the same time, this result is entirely dependent on the types involved. For example, "1.0 > 0" has a well-defined answer, and Python returns it. Considering the expression "x > y", the full process is: 1. Call x.__gt__(y). 2. If that returns a bool, that's the result. If it raises an exception, propagate the exception. 3. If it returns the sentinel value NotImplemented, attempt the reflected version of the operation: y.__lt__(x). 4. If that returns a bool, that's the result. If it raises an exception, propagate the exception. 5. If it returns the sentinel value NotImplemented, raise TypeError and inform the programmer this operator is not valid on these types.