Overview of common Python modules for server operations

Recently began to review the use of Python, the server operations commonly used modules of the use of the instantiation of the overview.

==========sort=========================python  sort; Ls=[1,31,13,141,41]ls.sort () Print ls tuple sort:>> > lst=[(' Wyl ', +), (' hjj ', +), (' Zs ', "), (' Lisi ', +)]>>> sorted (lst,key=lambda lst: lst[1],reverse=true) [(' Hjj ',  25),  (' Wyl ',  24),  (' Zs ',  22),  (' Lisi ',  14)] Dictionary sort: >>> print d{' a ': 2,  ' e ': 221,  ' d ': 222,  ' F ':  22,   ' age ': 24,  ' name ':  ' Wyl '}>>> sorted (D.iteritems (), key= lambda d:d [1]) [(' A ',  2),  (' F ',  22),  (' age ',  24),  (' E ',  221),  (' d ',  222),  ( ' Name ',  ' Wyl ')]==========paramiko=========================python ssh module:import paramikodef  SSH (host,cmd):          #host  =  ' 192.168.0.213 '           user =  ' Root '           s&Nbsp;= paramiko. Sshclient ()          s.load_system_host_keys ()           s.set_missing_host_key_policy (Paramiko. Autoaddpolicy ())          privatekeyfile =  Os.path.expanduser (' ~/.ssh/id_rsa ')          mykey =  Paramiko. Rsakey.from_private_key_file (Privatekeyfile)          # mykey =paramiko. Dsskey.from_private_key_file (privatekeyfile,password= ' 061128 ')              s.connect (host,22,user,pkey=mykey,timeout=5)            #cmd =raw_input (' CWD: ')           #cmd = "ip a |  grep inet | grep 192.168  | grep brd | awk -f/22   ' {print $1} ' |awk  ' {print $2} ' "         stdin,stdout,stderr =  s.exec_command (CMD)          cmd_result =  Stdout.read (), Stderr.read ()          for line in  cmd_result:                          return line.strip ("\ n")           s.close () print ssh ("192.168.0.2", ' ls /root ') ==========multiprocessing= ============IMPORT MULTIPROCESSINGDEF BINGFA (PICMIP):         srealmount=set (SSH (PICMIP, "mount|awk  ' $1~/192.168.0.7/{print $1}"). Rstrip (). Split ("\ n"))          #print  Srealmount         shortlist=list (Slocalmountls&nbsP;- srealmount)         for sl in shortlist:                 print  " mount-error-"+sl + time.ctime () f=open ('/share/yunwei/shell/mountip.txt ') pool=multiprocessing. Pool (processes=4) For ips in f:    pool.apply_async (BINGFA, (IPs,)) Pool.close () Pool.join () f.close () ========mysqldb===============python mysql module: Import mysqldbdef pyfmysql (* args):                 conn= MySQLdb.connect (host= ' 10.0.0.24 ', user= ' root ', passwd= ' xxxxx ', db= ' mon ', port=3306)                  cur=conn.cursor ()                  conn.select_db (' monitor ')         &nbsP;        cur.execute ("" "insert into t_sys_log  (CONTENT , host_ip,monitor_type,monitor_level,sms_flag,group_id)  values (%s,%s,%r,%r,%r,%r) "" ", args)                   #sqlcmd = ' Insert into  t_sys_log (content, host_ip, monitor_type, monitor_level, sms_flag,group_id)   VALUES (%s,%s,%s,%d,%d,%d) '                  sqlresult = cur.fetchall ()                  print sqlresult                 conn.commit ()                  cur.close ()                  conn.close () pyfmysql (' Test ', ' 127.0.0.1 ', 1,2,0,6) ==========json=============import  jsonnewd={' four ':  ' 192.168.0.10 ',  ' second ',:  ' 192.168.0.5 ',  ' third ':  ' 192.168.0.7 ',   ' first ':  ' 192.168.0.2 '}ojson=json.dumps (newd) file=open ('/tmp/jsonfile ', ' W ') File.write (Ojson) f=  open (R '/tmp/jsonfile ') jsonobj = json.load (f) oldd=eval (str (jsonobj)) f.close=========shutil===== =============import shutilshutil.copy ("1", "2") Shutil.rmtree ("=========cstringio===============import")  cstringio input: S=cstringio.stringio () s.write ("You are a girl") Output: Print s.getvalue () or S.seek (0) print s.read () =============time=================import timepasst =  Datetime.datetime.now ()  - datetime.timedelta (minutes=10) curtime2 = passt.strftime ('%Y%m%d% H ') ==============urllib=================import urllib>>> ourl=urllib.urlopen (' HTTP// Www.baidu.com ') >>> print &nBsp;ourl.info () >>> for line in ourl:print line,>>>  Google.close () import urllibprint urllib.urlopen (' http://www.google.com '). Read () ============urllib2== ==============#!/bin/env pythonimport urllib2# set up authentication  Infoauthinfo = urllib2. Httpbasicauthhandler () Authinfo.add_password (realm= ' pdq application ',                       uri= '/HTTP 10.0.0.1:8091/index.html ',                       user= ' admin ',                       passwd= ' admin ') #proxy_ Support = urllib2. Proxyhandler ({"http"  :  "http://ahad-haam:3128"}) # build a new opener that adds authentication and caching ftp handlersopener =  urllib2.build_opener (AUTHINFO,URLLIB2. Cacheftphandler) # install iturllib2.install_opener (opener) F = urllib2.urlopen (' HTTP// 10.0.0.1:8091/index.html#sec=servers ') Text=f.read () Print text

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Overview of common Python modules for server operations