专家
我在代码中遇到了一个值缺失错误，但我认为函数中的变量是声明的。我不知道为什么会这样。
$ python check_rsg_V0312.py
2018-03-20 13:05:49 === Script Start ===
2018-03-20 13:05:49 Monitoring via remote logon
The authenticity of host 'rpahost0 ([127.0.0.1]:7000)' can't be established.
RSA key fingerprint is 2d:f5:67:75:84:b6:24:45:e6:48:60:65:61:ca:69:f7.
Are you sure you want to continue connecting
(yes/no)? yes
Warning: Permanently added 'rpahost0' (RSA) to the list of known hosts.
Password:
Traceback (most recent call last):
File "check_rsg_V0312.py", line 89, in <module>
label = ssh_cmd(nLocalport, rsg_target, ouser, lookip, opasw, command,)
File "check_rsg_V0312.py", line 79, in ssh_cmd
print (ssh.before.decode(),ssh.after().decode())
TypeError: __init__() missing 1 required positional argument: 'value'
下面是我的代码，在ssh_cmd中发生一个错误真的很奇怪 功能。详细请查看代码中的注释。
import os,time,pexpect,re, subprocess, smtplib
from email import encoders
from email.header import Header
from email.mime.text import MIMEText
#-----------------------------------------
dir = os.environ['HOME']
ouser = 'x02d726'
opasw = 'qwe12'
nLocalport = 7000
lookip = '127.0.0.1'
rsg_target = "rpahost0"
command = "ls -ltrh | grep tunnel | tail"
nstage = 0
mail_addr = 'cheng.huang@qq.com'
otp_file = dir + '/otplist/C591260'
otp_list = []
rsg_file = dir + '/.rsg_hosts'
known_hosts = dir + '/.ssh/known_hosts'
rsg_port = "auto"
#-----------------------------------------
def printlog(prompt):
year, mon, mday, hour, min, sec, wday, yday, isdst = time.localtime()
print("%04d-%02d-%02d %02d:%02d:%02d %s" % (year, mon , mday, hour, min,
sec, prompt))
def get_egw_name(ref_arr, key):
for oneline in ref_arr:
if (re.search(key, oneline)):
templine = oneline
oneline = re.sub('^\s+|\s+$','',oneline)
egw_ssg = re.split('\s+',oneline)[2]
result = re.split(':',egw_ssg)[0]
return result
def sendworker(to_addr):
from_addr = 'itk-bj.ericsson.se'
smtp_server = 'smtp.eamcs.ericsson.se'
msg = MIMEText('There is no otp left ,please input new OTP list',
'plain', 'utf-8')
msg['From'] = from_addr
msg['To'] = to_addr
msg['Subject'] = Header(u'OTP List is Blank', 'utf-8')
server = smtplib.SMTP(smtp_server, 25)
#server.set_debuglevel(1)
server.sendmail(from_addr, to_addr, msg.as_string())
server.quit()
def ssh_cmd(port, target, user, ip, pasw, cmd ):
printlog("=== Script Start ===")
printlog("Monitoring via remote logon")
time.sleep(1)
ssh = pexpect.spawn('/usr/bin/ssh -p %s -o HostKeyAlias=%s %s@%s %s' %
(port, target, user, ip, cmd ),timeout=6000)
try:
i = ssh.expect(['Password: ', 'continue connecting (yes/no)?'],
timeout=15)
if i == 0 :
print(ssh.before.decode(),ssh.after.decode())
ssh.sendline(pasw)
elif i == 1:
print(ssh.before.decode(),ssh.after.decode())
ssh.sendline('yes')
ssh.expect('Password: ')
print(ssh.before.decode(),ssh.after.decode())
ssh.sendline(pasw)
except pexpect.EOF:
print ("no connection EOF,please check RSG tunnel")
except pexpect.TIMEOUT:
print ("your pexpect has TIMEOUT")
else:
ssh.expect(pexpect.EOF)
print (ssh.before.decode(),ssh.after().decode()) # if I disable this line, there will be no error.
flag = ssh.before.decode()
return flag
ssh.close()
if __name__ == '__main__':
if os.path.exists(os.environ['HOME'] + "/.ssh/known_hosts"):
os.remove(known_hosts)
else:
pass
label = ssh_cmd(nLocalport, rsg_target, ouser, lookip, opasw, command)
if re.search('tunnel_check', str(label)):
nstage = 1
if (nstage == 0):
printlog("Tunnel was down and will re-establish now\n")
rsg = open (rsg_file,'r')
rsg_in = rsg.readlines()
rsg.close()
egwname = get_egw_name(rsg_in, rsg_target)
try :
otp = open(otp_file, 'r')
otp_arrary = otp.readlines()
otp.close()
for ot in otp_arrary:
ot = ot.strip()
ot = ot.replace('^\s*|\s*$', '')
otp_list.append(ot)
otp_num = len(otp_list) + 1
if (otp_num > 0):
os.remove(rsg_file)
try :
new_otp = otp_list[0]
except IndexError:
printlog('There is no otp left ,please input new OTP list')
sendworker(mail_addr)
sys.exit()
else:
out = open(rsg_file, 'w')
for line in rsg_in :
line = line.strip()
line = line.replace('^\s+|\s+$','')
if (re.match(egwname, line)):
temp_line = line
old_otp = re.split('\s+',temp_line)[5]
old_otp = old_otp.replace('^\s+|\s+$', '')
line = line.replace(old_otp, new_otp).replace('\\','')
printlog(line + "\n")
out.write(line + "\n")
out.close()
os.remove(otp_file)
time.sleep(1)
outotp = open(otp_file , 'w+')
i = 0
while (i < len(otp_list)):
outotp.write(otp_list[i] + "\n")
i += 1
outotp.close()
os.system("pkill -9 -f \"ssh\.\*-L " + str(nLocalport) + "\"")
os.system("sleep 10")
os.system("pkill -9 -f \"rtunnel\.\*-p " + str(nLocalport) + "\"")
os.system("nohup /opt/ericsson/itk/bin/rtunnel -d -q -g -p " + str(nLocalport) + "-rp auto " + rsg_target + " &")
os.system("sleep 10")
printlog("Kill the rtunnel process\n");
printlog("Tunnel is re-established again\n");
else:
sendworker(mail_addr)
except IOError:
print ("File is not accessible.")
else:
printlog("Tunnel OK")
如您所见，在禁用Try... else...块中的行后，代码就可以了。
else:
ssh.expect(pexpect.EOF)
print (ssh.before.decode(),ssh.after().decode()) # if I disable this line, there will be no error.
flag = ssh.before.decode()
return flag
答案 0 :(得分：0)
如果你仔细查看你的追溯，你会发现问题：
而不是：
print (ssh.before.decode(),ssh.after().decode())
你应该写
print (ssh.before.decode(),ssh.after.decode())
after是一个返回字符串的方法，而不是函数。
BTW，我认为你应该在你的pexpect构造函数中添加解码/编码。