python 正規表示式過濾例項1

（1）print  展現字串：
>>> print res
lsnrctl status

LSNRCTL for Linux: Version 10.2.0.5.0 - Production on 19-APR-2013 15:35:19

Copyright (c) 1991, 2010, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.21.14)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.5.0 - Production
Start Date                21-MAR-2013 22:42:02
Uptime                    28 days 16 hr. 53 min. 17 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/product/10.2.0.5/network/admin/listener.ora
Listener Log File         /oracle/product/10.2.0.5/network/log/listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.21.14)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "st.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "st_XPT.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "wxxrdb" has 1 instance(s).
  Instance "wxxrdb", status UNKNOWN, has 1 handler(s) for this service...
Service "wxxrdb.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "wxxrdbXDB.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@anhuidbs ~]$
>>>

（2）裸展現：

>>> res     
'lsnrctl status\r\n\r\nLSNRCTL for Linux: Version 10.2.0.5.0 - Production on 19-APR-2013 15:35:19\r\n\r\nCopyright (c) 1991, 2010, Oracle.  All rights reserved.\r\n\r\nConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.21.14)(PORT=1521)))\r\nSTATUS of the LISTENER\r\n------------------------\r\nAlias                     LISTENER\r\nVersion                   TNSLSNR for Linux: Version 10.2.0.5.0 - Production\r\nStart Date                21-MAR-2013 22:42:02\r\nUptime                    28 days 16 hr. 53 min. 17 sec\r\nTrace Level               off\r\nSecurity                  ON: Local OS Authentication\r\nSNMP                      OFF\r\nListener Parameter File   /oracle/product/10.2.0.5/network/admin/listener.ora\r\nListener Log File         /oracle/product/10.2.0.5/network/log/listener.log\r\nListening Endpoints Summary...\r\n  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.21.14)(PORT=1521)))\r\n  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))\r\nServices Summary...\r\nService "PLSExtProc" has 1 instance(s).\r\n  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...\r\nService "st.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "st_XPT.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "wxxrdb" has 1 instance(s).\r\n  Instance "wxxrdb", status UNKNOWN, has 1 handler(s) for this service...\r\nService "wxxrdb.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "wxxrdbXDB.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nThe command completed successfully\r\n[oracle@anhuidbs ~]$'

（3）處理要求：去掉展現的首行和最後一行 和空白行


 p= re.compile(r'(^lsnrctl\s+status\s*)|(^\r\n)|(^\[.*\]\s*\$\s*)',re.M)
 res2=p.sub('', res)

（4）處理以後展現：
>>> print res2
LSNRCTL for Linux: Version 10.2.0.5.0 - Production on 19-APR-2013 15:35:19
Copyright (c) 1991, 2010, Oracle.  All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.21.14)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 10.2.0.5.0 - Production
Start Date                21-MAR-2013 22:42:02
Uptime                    28 days 16 hr. 53 min. 17 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /oracle/product/10.2.0.5/network/admin/listener.ora
Listener Log File         /oracle/product/10.2.0.5/network/log/listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.21.14)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "st.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "st_XPT.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "wxxrdb" has 1 instance(s).
  Instance "wxxrdb", status UNKNOWN, has 1 handler(s) for this service...
Service "wxxrdb.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
Service "wxxrdbXDB.anhui.wxxr.com.cn" has 1 instance(s).
  Instance "wxxrdb", status READY, has 1 handler(s) for this service...
The command completed successfully

（5）處理以後裸展現
'LSNRCTL for Linux: Version 10.2.0.5.0 - Production on 19-APR-2013 15:35:19\r\nCopyright (c) 1991, 2010, Oracle.  All rights reserved.\r\nConnecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.21.14)(PORT=1521)))\r\nSTATUS of the LISTENER\r\n------------------------\r\nAlias                     LISTENER\r\nVersion                   TNSLSNR for Linux: Version 10.2.0.5.0 - Production\r\nStart Date                21-MAR-2013 22:42:02\r\nUptime                    28 days 16 hr. 53 min. 17 sec\r\nTrace Level               off\r\nSecurity                  ON: Local OS Authentication\r\nSNMP                      OFF\r\nListener Parameter File   /oracle/product/10.2.0.5/network/admin/listener.ora\r\nListener Log File         /oracle/product/10.2.0.5/network/log/listener.log\r\nListening Endpoints Summary...\r\n  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.21.14)(PORT=1521)))\r\n  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC0)))\r\nServices Summary...\r\nService "PLSExtProc" has 1 instance(s).\r\n  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...\r\nService "st.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "st_XPT.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "wxxrdb" has 1 instance(s).\r\n  Instance "wxxrdb", status UNKNOWN, has 1 handler(s) for this service...\r\nService "wxxrdb.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nService "wxxrdbXDB.anhui.wxxr.com.cn" has 1 instance(s).\r\n  Instance "wxxrdb", status READY, has 1 handler(s) for this service...\r\nThe command completed successfully\r\n'