CODEWITHSUNDEEP
pythonpython-3.xpython-3.4
Nikhil Gupta
Nikhil Gupta

Reputation: 13

FileNotFoundError: [WinError 2] python 3.4

I am trying to auto accept ssh-rsa key through Plink via python. But I am getting error

Below is my code 

def __init__(self, ipaddress, option, user, password, command=""):
    """
    Constructor creates the connection to the host.
    """
    self.ipaddress = ipaddress
    self.option = option
    self.user = user
    self.password = password
    self.command = command
    self.key()

def key(self):
    command1 = ['echo', 'y']
    process1 = subprocess.Popen(command1,stdout=subprocess.PIPE)
    command2 = ['plink', '-ssh', self.option, '-pw', self.password, '%s@%s'%(self.user, self.ipaddress), '\"exit\"']
    process2 = subprocess.Popen(command2,stdin=process1.stdout,stdout=subprocess.PIPE)

def sendSingleCommand(self, command):
    """
    Set up a ssh connection a device, send command, close connection and return stdout,stderr tuple.
    """
    try:
        print("plink -ssh %s -pw %s %s@%s %s" \
                % (self.option, self.password, self.user, self.ipaddress, command))
        self.process = subprocess.Popen("plink -ssh %s -pw %s %s@%s %s" \
                % (self.option, self.password, self.user, self.ipaddress, command), shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE)

But i am getting error for Key() function for the line process1. Below is the error :

File "C:\Python34\lib\subprocess.py", line 859, in __init__  
Error:     restore_signals, start_new_session)  
Error:   File "C:\Python34\lib\subprocess.py", line 1112, in _execute_child  
Error:     startupinfo)  
Error: FileNotFoundError: [WinError 2] The system cannot find the file specified

Upvotes: 1

Views: 3485

Answers (1)

Anand S Kumar
Anand S Kumar

Reputation: 90889

In Windows , to use echo in subprocess, you would need to use shell=True . This is because echo is not a separate executable, but rather a built-in command for the windows command line. Example -

process1 = subprocess.Popen(command1,stdout=subprocess.PIPE,shell=True)

Also, please do note, you should only use shell=True when absolutely necessary (as in this case , to use echo in windows in subprocess).

Though as a whole, you can directly pass in y to your second command using PIPE and .communicate(). Example -

def key(self):
    command2 = ['plink', '-ssh', self.option, '-pw', self.password, '%s@%s'%(self.user, self.ipaddress), '\"exit\"']
    process2 = subprocess.Popen(command2,stdin=subprocess.PIPE,stdout=subprocess.PIPE)
    output, _ = process.communicate(b'y')

Upvotes: 2

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