import sys
def f():
    return [i
        for i
        in range(5)]
lines = []
def tracefunc(frame, what, arg):
    if what == 'line':
        lines.append(frame.f_lineno)
    else:
        lines.append(what)
    return tracefunc
sys.settrace(tracefunc)
f()
sys.settrace(None)
print(lines)