if a generator passed to min/max throws an exception, the stack trace is normally shown on the line that caused the exception, but if the exception is a StopIteration, the trace only shows the line where the max/min function was called.

I was writing a minimax and alphabeta search with generator expression and list comprehension and accidentally passed an empty iterator to the next function while computing states for minimax and it took a very long time to find out where the error was actually caused.