部署的时候出现错误，这个是什么意思？

[skyonline]

Traceback (most recent call last):
File "C:\Program Files\Google\google_appengine\appcfg.py", line 69, in <module>
run_file(__file__, globals())
File "C:\Program Files\Google\google_appengine\appcfg.py", line 65, in run_file
execfile(script_path, globals_)
NameError: global name 'execfile' is not defined
2010-09-07 22:48:30 (Process exited with code 1)