【发布时间】：2020-02-14 21:51:18
【问题描述】：
我正在尝试创建一个程序，用于在网络中搜索特定的 mac 地址。
当我运行 cisco 命令“show mac-address-table”时，它会给出保存到 MH2 的输出。如果该输出具有“000c”。在其中，所有输出都保存到一个 txt 文件中，我希望我能够根据使用的命令（显示 MAC 地址表与显示 MAC 地址表）过滤并从中提取 VLAN带有mac地址的行的vlan位置可以在左边或右边。我打算稍后弄清楚那部分，但现在我的脚本似乎没有读取文件（它正在获得正确的输出并且其中有一个“000c”条目）我将输入代码下面：
#!/usr/bin/env python3
from time import sleep
import telnetlib
from getpass import getpass
# f is the .txt document that lists the IP's we'll be using.
f = open("devicess.txt")
#
username = input("please provide your username:")
password = getpass()
#
for line in f:
device = (line)
print('Starting to collect information, please wait')
#For those devices in the above list, connect and run the below commands
def loopstart():
for device in f:
tn = telnetlib.Telnet()
tn.open(device, 23, 20)
#Remove # in the line below for debug
#tn.set_debuglevel(2000)
tn.read_until(b"Username:", timeout = 20)
sleep(.25)
tn.write(str(username + "\n").encode("ascii"))
sleep(.25)
tn.read_until(b"Password: ", timeout = 10)
sleep(.25)
tn.write((password + "\n").encode("ascii"))
sleep(.25)
#####################################
#Verify Login attempt below #
#####################################
try:
enablemode = tn.read_until(b"#")
if (b"FAIL") in enablemode:
print("Bad credentials to " + device)
tn.close()
sleep(.5)
elif (b"fail") in enablemode:
print("Bad credentials to " + device)
tn.close()
sleep(.5)
elif (b"#") in enablemode:
print("connection established to " + device)
try:
tn.write(str("show mac address-table | include 000c.\n").encode('ascii'))
sleep(2)
MH2 = tn.read_very_eager()
if (b"000c.15") in MH2:
try:
sleep(.5)
mactable = open("mactable.txt", "rb+")
mactable.seek(0)
mactable.write(MH2)
mactable.truncate()
OP1 = mactable.read
for line in OP1():
CPMAC = (line)
try:
if (b"000c.15") in CPMAC:
print("line 70 in use")
print((CPMAC) + " this is what vlan the cyber power device should be on")
tn.write(str("show interface vlan" + (CPMAC[:6]) + "\n")).encode("ascii")
tn.read_until(b"Internet Address")
tn.close()
elif (str("All")) in (CPMAC):
print ("CPU has matching MAC, moving to next device")
tn.close()
else:
print("No Cyber power device found on " + device)
tn.close()
except EOFError as e:
print("could not pull vlan from output")
except EOFError as e:
print("unidentified issue")
#Execute the following commands in case of invalid command input
elif (b"Invalid") in MH2:
sleep(.5)
try:
tn.write(str("show mac-address-table | in 000c.\n").encode('ascii'))
sleep(2)
MH3 = tn.read_very_eager()
if (b"000c.15") in MH3:
print("Line 90 in use")
try:
sleep(.5)
mactable = open("mactable.txt", "r+")
mactable.seek(0)
mactable.write(str(MH3))
OP2 = (mactable.read())
print (type(OP2))
mactable.truncate()
for line in OP2():
CPMAC = (line)
try:
if ("000c.15") in (CPMAC):
print((CPMAC) + " this is what vlan the cyber power device should be on")
tn.write(str("show interface vlan" + (CPMAC[:6])+ "\n").encode("ascii"))
tn.read_until(b"Internet Address")
tn.close()
elif (str("All")) in (CPMAC):
print ("CPU has matching MAC, moving to next device")
tn.close()
else:
print("No Cyber power device found on " + device)
tn.close()
except EOFError as e:
print("could not pull vlan from output")
except EOFError as e:
print("unidentified issue")
elif (b"000c.15") not in MH3:
print ("Cyber power device not found, moving to next device.")
tn.close()
else:
print("Unknown Error")
tn.close()
##############################
# Logout commands #
##############################
except EOFError as e:
print("Connection closed to " + device)
else:
tn.write(str("exit\n").encode('ascii'))
tn.write(str("exit\n").encode('ascii'))
tn.close()
print(tn.read_all().decode('ascii'))
except EOFError as e:
print ("unknown error")
else:
tn.close()
except EOFError as e:
print("Connection closed to " + device)
except Exception as exception:
print(exception, False)
tn.close()
loopstart()
print('script complete')
"if ("000c.15") in (CPMAC)" 是我认为我遇到问题的代码部分。任何帮助表示赞赏！
【问题讨论】：
-
请提供您的所有代码。但是，CPMAC 是什么列表/元组？您不需要在该行的变量周围加上括号。
-
谢谢蒂姆，我已经添加了完整的代码。 CPMAC 应该只是 show mac address-table 或 show mac-address-table 输出中的一行。我能够打开该文件并确保 mac 地址表命令输出进入该文件，因此它肯定可以正常工作。我似乎无法使用 python 搜索文件的行。在 CPMAC 中带有 - if (b"000c.15") 的行： - 应该可以工作，但它似乎没有检测到我已经验证过的行存在。谢谢！