python trace

trace.py

import sys

def tracer(frame, event, arg):
    print(f'{frame = }')
    print(f'{event = }')
    print(f'{arg = }')
    print()
    
		# if you enter any function, still use the same trace function.
    if event == 'call':
        return tracer
    
sys.settrace(tracer)

def inc(i):
    return i

inc(2)