def f():
    return [i
            for i
            in range(2)]
from dis import dis
import sys, opcode
dis(f)
print('listcomp:')
dis(f.__code__.co_consts[1])
events = []
def tracefunc(frame, what, arg):
    if what == 'line':
        events.append("%d %d %s" % (frame.f_lineno, frame.f_lasti,
                 opcode.opname[frame.f_code.co_code[frame.f_lasti]]))
    return tracefunc
sys.settrace(tracefunc)
f()
sys.settrace(None)
print(events)