Stopwatch() can now be restarted and will automatically sum up all intervals between start() and stop() calls

src/tools/stopwatch.py

@@ -8,6 +8,7 @@ class StopWatch:
     stopped: int | None = None
 
     def __init__(self, auto_start=True):
+        self.total_elapsed = 0
         if auto_start:
             self.start()
 
@@ -15,9 +16,9 @@ class StopWatch:
         self.started = perf_counter_ns()
         self.stopped = None
 
-    def stop(self) -> float:
+    def stop(self):
         self.stopped = perf_counter_ns()
-        return self.elapsed()
+        self.total_elapsed += self.elapsed()
 
     reset = start
 
@@ -28,10 +29,10 @@ class StopWatch:
             return self.stopped - self.started
 
     def elapsed_string(self) -> str:
-        return human_readable_time_from_ns(self.elapsed())
+        return human_readable_time_from_ns(self.total_elapsed)
 
     def avg_elapsed(self, divider: int) -> float:
-        return self.elapsed() / divider
+        return self.total_elapsed / divider
 
     def avg_string(self, divider: int) -> str:
         return human_readable_time_from_ns(int(self.avg_elapsed(divider)))