python 处理telnet返回的More,以及get想要的那个参数方法

 #! usr/bin/env python # -*- coding: utf-8 -*- import telnetlib import math import time def get_param(b): "获取相应的参数，返回float型参数组" c = [] b = list(b) length = len(b) print length for x in b: c.append(float(x)) print c return c def get_avg(a): "获取平均值" length = len(a) sum = 0 for x in a: sum += x avg = sum/length return avg def get_telnet(tn): "获取telnet数据" for command in commands: tn.write('%s\n' % command) time.sleep(0.5) ## result = tn.read_very_eager() # 不用read_all()，不能处理More print "**************" a = [] a.append('More') print a result = str() while True: b,c,d = tn.expect(a,timeout=1) print b # 有More为0，无More为-1 print 'cccccccccccccccccccccccccccccccccccccccccccc' print c print 'dddddddddddddddddddddddddddddddddddddddddddd' print d result += d if 0 == b: print "There has 'More'!!!" tn.write(r' ') #不用\r\n来继续 else: break print 'get result success!' print result #获取到带More的所有返回结果 a = result.split('\r\n') # 不要加r length = len(a) print length b = a[1].split(' ') print b print a[32] c = a[32] d = c.split(' ') print d length = len(d) print d[8] e = d[8].split('(') print e[0] return e[0] def close_telnet(tn): "执行完毕后，终止Telnet连接（或输入exit退出）" tn.write('exit\n') tn.close() def open_telnet(Host, username, password, finish, commands): "Telnet远程登录" # 连接Telnet服务器 tn = telnetlib.Telnet(Host, port=23, timeout=10) tn.set_debuglevel(2) # 输入登录用户名 tn.read_until('Username:') tn.write(username + '\n') # 输入登录密码 tn.read_until('Password:') tn.write(password + '\n') # 登录完毕后执行命令 tn.read_until(finish) return tn if __name__=='__main__': Host = '' # Telnet服务器IP username = '' # 登录用户名 password = '' # 登录密码 finish = '#' # 命令提示符 param = [] commands = ['sho optical-module-info xgei-1/3/1'] tn = open_telnet(Host, username, password, finish, commands) for i in range(1,10): param.append(get_telnet(tn)) close_telnet(tn) print param print get_avg(get_param(param)) ''' 运行结果： 37 ['Optical', 'Module', 'Position', ':', 'xgei-1/3/1'] Bias-Upper : 131(mA)  Bias-Lower : 0(mA) ['Bias-Upper', '', '', '', '', '', '', ':', '131(mA)', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'Bias-Lower', '', '', '', '', '', '', ':', '0(mA)'] 131(mA) 131 Telnet(172.10.1.123,23): send 'exit\n' ['131', '131', '131', '131', '131', '131', '131', '131', '131'] 9 [131.0, 131.0, 131.0, 131.0, 131.0, 131.0, 131.0, 131.0, 131.0] 131.0 >>> '''