Generators — Range Stepper

Implement solve(start, stop, step) as a generator function that yields integers from start up to (but not including) stop, incrementing by step each time.

Examples

• list(solve(0, 10, 2)) → [0, 2, 4, 6, 8]
• list(solve(1, 6, 1)) → [1, 2, 3, 4, 5]
• list(solve(5, 0, -1)) → [5, 4, 3, 2, 1]
• list(solve(0, 0, 1)) → []

Constraints

• step may be negative (count down).
• If step == 0, raise a ValueError.
• Do not use Python's built-in range().
• Your function must use the yield keyword.