这就是你需要的
http://ynniv.com/blog/2007/11/debugging-
python.html
三种方式，第一种是简单但粗略的方法（Thomas Heller）-将以下内容添加到site-packages / sitecustomize.py中：
import pdb, sys, tracebackdef info(type, value, tb): traceback.print_exception(type, value, tb) pdb.pm()sys.excepthook = info
第二个更为复杂，并从菜谱中检查交互模式（奇怪地跳过了交互模式下的调试）：
# pre snippet, to be included in 'sitecustomize.py'import sysdef info(type, value, tb): if hasattr(sys, 'ps1') or not sys.stderr.isatty(): # we are in interactive mode or we don't have a tty-like # device, so we call the default hook sys.__excepthook__(type, value, tb) else: import traceback, pdb # we are NOT in interactive mode, print the exception... traceback.print_exception(type, value, tb) print # ...then start the debugger in post-mortem mode. pdb.pm()sys.excepthook = info
第三个（ynniv）（除非重定向stdin或stderr，否则始终启动调试器）
# pre snippet, to be included in 'sitecustomize.py'import sysdef info(type, value, tb): if (#hasattr(sys, "ps1") or not sys.stderr.isatty() or not sys.stdin.isatty()): # stdin or stderr is redirected, just do the normal thing original_hook(type, value, tb) else: # a terminal is attached and stderr is not redirected, debug import traceback, pdb traceback.print_exception(type, value, tb) print pdb.pm() #traceback.print_stack()original_hook = sys.excepthookif sys.excepthook == sys.__excepthook__: # if someone already patched excepthook, let them win sys.excepthook = info
