gc.mem_free() - very useful 'free memory' indication for Pybricks

[TrainsWithLights]

Found this command while reading through some micropython literature. Gave it a quick 'compile and test' and it actually runs on Pybricks

import gc

def free ():
    gc.collect()
    return gc.mem_free()

print (free())

19216

The main advantages
-> NOT needing to load the from micropython import mem_info, qstr_info, which in itself consumes a few hundred bytes of memory.
-> the output is compact and much simpler to read
-> returns a single variable when used within a function

[BertLindeman]

For movehub users:
This will not work on a movehub as the micropython module gc is not implemented there.