2.23 快速打印函数的调用栈

在使用pdb时，手动打印调用栈

import traceback
traceback.print_stack(file=sys.stdout)

或者直接使用 where （更简单的直接一个 w）：https://www.codenong.com/1156023/

(Pdb) where
  /usr/lib/python2.7/site-packages/eventlet/greenpool.py(82)_spawn_n_impl()
-> func(*args, **kwargs)
  /usr/lib/python2.7/site-packages/eventlet/wsgi.py(719)process_request()
-> proto.__init__(sock, address, self)
  /usr/lib64/python2.7/SocketServer.py(649)__init__()
-> self.handle()
  /usr/lib64/python2.7/BaseHTTPServer.py(340)handle()
-> self.handle_one_request()
  /usr/lib/python2.7/site-packages/eventlet/wsgi.py(384)handle_one_request()
-> self.handle_one_response()
  /usr/lib/python2.7/site-packages/eventlet/wsgi.py(481)handle_one_response()