trace all the python things

trace.py

#!/usr/bin/env python3
# why the heck are you crashing suddenly
import datetime
import functools
import threading
import traceback
import os
import signal
import sys


def signal_handler(prev_handler, signum, frame):
    print(
        datetime.datetime.now().strftime('%m/%d/%Y %H:%M:%S.%f'),
        f'caught signal {signum}'
    )

    if callable(prev_handler):
        prev_handler(signum, frame)
    elif prev_handler == signal.SIG_DFL:
        this = signal.signal(signum, signal.SIG_DFL)
        os.kill(os.getpid(), signum)  # or signal.raise_signal() in Py >= 3.8
        signal.signal(signum, this)

catchable_sigs = set(signal.Signals) - {signal.SIGKILL, signal.SIGSTOP}
for sig in catchable_sigs:
    prev_handler = signal.getsignal(sig)
    signal.signal(sig, functools.partial(signal_handler, prev_handler))

def trace(frame, event, arg):
    if event == 'line':
        stack = traceback.extract_stack(frame, 1)[0]
        print(
            datetime.datetime.now().strftime('%m/%d/%Y %H:%M:%S.%f'),
            f'[{threading.get_ident()}]',
            f'{stack.filename}:{stack.lineno}',
            stack.line
        )
    return trace

threading.settrace(trace)
sys.settrace(trace)