Things you didn't know about Python https://speakerdeck.com/u/mitsuhiko/p/didntknow

didntknow.py

import sys
import traceback
def dump_threads():
  for thread_id, frame in sys._current_frames().iteritems():
    print 'Thread #%d' % thread_id
    print ''.join(traceback.format_stack(frame))

# Usage: print_frame_info(sys._getframe())
def print_frame_info(frame):
  print 'module: %s' % frame.f_globals.get('__name__')
  print 'filename: %s' % frame.f_code.co_filename
  print 'current line: %d' % frame.f_lineno
  loc = dict((k, v) for k, v in frame.f_locals.iteritems() if not k.startswith('__')) 
  print 'local variables: %s' % loc

I would prefer for the latter:

import inspect

def print_frame_info():
    frame = inspect.stack()[1][0]
    ...