Category: Advanced Configuration
Why are you using Python when the feed rate is available in real time in motion? There are other options but try this pin
motion.feed-upm OUT FLOATCurrent feed rate in G-code program units per minute for motion.motion-type feed(2) and arc(3). Value is the G-code program F value multiplied by the current feed override value and the motion.adaptive-feed setting (if M52 active). Value is zero if motion.feed-hold or motion.feed-inhibit are asserted. If units (G20 or G21) are not specified in the G-code file then units will be the last units used.
linuxcnc.org/docs/stable/html/man/man9/motion.9.html
