使用pdb调试python代码

/usr/bin/python -m pdb  /usr/bin/cinder-api --config-file /usr/share/cinder/cinder-dist.conf --config-file /etc/cinder/cinder.conf --logfile /var/log/cinder/api.log

> /usr/bin/cinder-api(18)<module>()
-> """Starter script for Cinder OS API."""
(Pdb)
(Pdb) n                                                                             执行下一行（next）
> /usr/bin/cinder-api(20)<module>()
-> import eventlet
(Pdb) b 30                                                                       在30行设置断点
Breakpoint 1 at /usr/bin/cinder-api:30
(Pdb) b                                                                             查询断点 （break）
Num Type         Disp Enb   Where
1   breakpoint   keep yes   at /usr/bin/cinder-api:30
(Pdb)
Num Type         Disp Enb   Where
1   breakpoint   keep yes   at /usr/bin/cinder-api:30
(Pdb) n
> /usr/bin/cinder-api(21)<module>()
-> eventlet.monkey_patch()
(Pdb)
> /usr/bin/cinder-api(23)<module>()
-> import os
(Pdb) l                                                                              查看当前行的代码段（list）
 18     """Starter script for Cinder OS API."""
 19
 20     import eventlet
 21     eventlet.monkey_patch()
 22
 23  -> import os
 24     import sys
 25
 26     from oslo.config import cfg
 27
 28     possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
(Pdb) s                                                                             进入函数单步执行（step）
> /usr/bin/cinder-api(24)<module>()
-> import sys
(Pdb)
> /usr/bin/cinder-api(26)<module>()
-> from oslo.config import cfg
(Pdb)
--Call--
> /usr/lib/python2.6/site-packages/oslo/config/__init__.py(1)<module>()
-> # vim: tabstop=4 shiftwidth=4 softtabstop=4
(Pdb)
> /usr/lib/python2.6/site-packages/oslo/config/__init__.py(1)<module>()
-> # vim: tabstop=4 shiftwidth=4 softtabstop=4
(Pdb)
--Return--
> /usr/lib/python2.6/site-packages/oslo/config/__init__.py(1)<module>()->None
-> # vim: tabstop=4 shiftwidth=4 softtabstop=4
(Pdb)
--Call--
> /usr/lib/python2.6/site-packages/oslo/config/cfg.py(261)<module>()
-> """
(Pdb)
> /usr/lib/python2.6/site-packages/oslo/config/cfg.py(261)<module>()
-> """
(Pdb)
> /usr/lib/python2.6/site-packages/oslo/config/cfg.py(263)<module>()
-> import argparse
(Pdb)
--Call--
> /usr/lib/python2.6/site-packages/argparse.py(62)<module>()
-> """
(Pdb)
> /usr/lib/python2.6/site-packages/argparse.py(62)<module>()
-> """
(Pdb)
> /usr/lib/python2.6/site-packages/argparse.py(64)<module>()
-> __version__ = '1.2.1'
(Pdb)c                                                                                      继续一直执行（continue）

> /usr/bin/cinder-api(51)<module>()
-> version=version.version_string())
(Pdb)
> /usr/bin/cinder-api(52)<module>()
-> logging.setup("cinder")

(Pdb) p version                                                                        打印变量值
<module 'cinder.version' from '/usr/lib/python2.6/site-packages/cinder/version.pyc'>
(Pdb) pp version
<module 'cinder.version' from '/usr/lib/python2.6/site-packages/cinder/version.pyc'>

(Pdb)d  linenumber                                                                   删除指定断点

(Pdb)r                                                                                           跳到下一个断点处

(Pdb)h                                                                                             帮助