pexpect prompt for blank space in python [closed]

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Closed 8 years ago.

Can any one please tell me, what is the prompt we have to give for expecting a blank space for a python script.I need to execute a command which will execute only after it sees the expect prompt.On doing manually i got that the prompt is a blank space,and has to expect the same prompt via script also.

import pexpect import pxssh import time import os,re,sys

def ssh(ipaddr,password): try:

    ss = pexpect.spawn(ipaddr)
    print ipaddr    
        ss.logfile = open("/tmp/mynewlog", "a")
        print "SSH connecting"
        print 
except:
    print "connection refused"
    print
    #sys.exit()

    try:
        print password
        ss.expect (':')

            ss.sendline (password +"\n")
            print "connected"
            time.sleep(30)
            ss.expect (">")
            print "connection established"
            print

    except:
            print "Permission denied, please try again."
                print
                sys.exit()
    try:
        ss.sendline ('taskkill /F /IM iperf.exe\n')
        time.sleep(30)
        ss.expect ('>')
            ss.sendline ('cd /D D:\iperf-2.0.5-2-win32\n')
            ss.expect ('>')
            ss.sendline ('iperf -s\n')#########This command i need to execute and i'm  expecting a blank space as prompt
            ss.sendline (pexpect.EOF)
            print "END"
            ssh()  

except: print "Failed to execute the command"
print sys.exit()

Answer 1

Edit:

ss.expect takes any string as a regular expression, and uses it to search the output from a program. In your case, if you want to match the line before all the dashes, you can do

ss.expect(r'TCP window size: .*yte \(default\)')

More broadly, I'm not sure what you're trying to accomplish with this, but it might be helpful to look at this page.

---

Old:

I'm not sure what you mean when you say that you expect a blank space as prompt.

1) Is it really a space? If so ss.expect(' ') seems like it should work.

2) Is there an end of line? If so ss.expect('\n') seems like it should work.

3) Does iperf really give you a prompt? Is it really waiting for input? And you're sending an EOF? Does this kill the program?