[英]print and pexpect logging and reading the file
I am actually trying to write the commands and its output to a file and then read the file . 我实际上正在尝试将命令及其输出写入文件,然后读取文件。 The file is created , but for reading the file, it gives error as valueerror i/o operation. 文件已创建,但为了读取文件,它会以valueerror I / O操作的形式给出错误。 What am I missing here. 我在这里想念什么。 ? ?
import pexpect
import time,sys
from StringIO import StringIO
telconn=pexpect.spawn('telnet 10.24.12.109')
telconn.logfile = sys.stdout
telconn.expect(":")
telconn.send("user" + "\r")
telconn.expect(":")
telconn.send("pass" + "\r\r\r\r\n\n\n")
telconn.expect("key to proceed.")
telconn.send ("\003")
telconn.expect("root>")
sys.stdout=open("test1.txt","w")
print "Telnet connection is done"
telconn.sendline('ls -al');
telconn.expect (['root>',pexpect.EOF])
ls = telconn.before
telconn.sendline('pwd');
telconn.expect (['root>',pexpect.EOF])
pwd = telconn.before
telconn.sendline('cli');
telconn.expect (['#',pexpect.EOF])
cli = telconn.before
telconn.sendline('\n\n');
telconn .sendline('exit');
telconn.close()
print ls
print pwd
print cli
print "Ended session"
sys.stdout.close()
sys.stdout = open("test1.txt", "r+")
str = sys.stdout.read();
print "Read String is : ", str
# Close opend file
print "Read String is : ", str
sys.stdout.close()
edit (OP wants system call prints to file): 编辑(OP要系统调用打印到文件):
Save the standard output to some temp var, so just add: 将标准输出保存到一些临时变量中,因此只需添加:
prev_std = sys.stdout
before you do sys.stdout=open("test1.txt","w")
. 在执行sys.stdout=open("test1.txt","w")
。
After you are done and closed sys.stdout
, restore the original one: 完成并关闭sys.stdout
,还原原始的一个:
sys.stdout = prev_std
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