weird but necessary print statement swap

main.py

@@ -88,11 +88,11 @@ def wait_or_enter(duration, i3_focus=False):
             stderr=DEVNULL,
         )
 
-    if stop:
+    if time() - start < duration:
         return sys.stdin.readline().strip()
     else:
-        print()
         tcflush(sys.stdin, TCIOFLUSH)
+        print(flush=True)
         return
 
 def write_break_message(msg):
@@ -103,7 +103,6 @@ def write_break_message(msg):
         print(msg)
         f.write(msg + "\n")
 
-
 def main(playlist, work_time, break_time):
     interval = generate_interval(work_time, break_time)
     while True:
@@ -126,7 +125,6 @@ def main(playlist, work_time, break_time):
 
         write_break_message(msg)
 
-
 def timer(playlist, duration):
     second = datetime.now().strftime("%H:%M:%S")
     print(second, "wait for", duration, "seconds")
@@ -180,7 +178,7 @@ if __name__ == "__main__":
 
     if args.test_sound:
         test_playlist(args.playlist)
-    else:
+    elif args.once is None:
         # For some reason the first time I play the playlist it doesn't work.
         # This is a workaround.
         test_playlist(args.playlist, 10)