Python print adds new line and 0

Here's my issue. I'm trying to ssh to Cisco devices and pull inform开发者_JS百科ation off. When I run my code, the print statement adds a new line with a 0 in it to the bottom of the output. Here is the output of the code followed by the output of the plink CLI input:

C:\Python30>python PLINKSSHtest.py
Enter your username: josh
Password:
plink -pw nowayjose -ssh nope@1.1.1.1 "show run | inc hostname"
hostname net-R2
0  <------------MY ISSUE

C:\Python30>plink -pw nowayjose -ssh nope@1.1.1.1 "show run | inc hostname"
hostname net-R2
  <------------WHAT I EXPECT

Here is my code:

def read_dev():
    # Print statement here for debugging
    print ("plink -pw " + password + " -ssh " + user + "@" + HOST + " " + command)
    cur_dev = os.system("plink -pw " + password + " -ssh " + user + "@" + HOST + " " + command)
    return(cur_dev)

HOST = None
user = input("Enter your username: ")
password = getpass.getpass()
command = '"show run | inc hostname"'
HOST = '1.1.1.1'    
print (read_dev())

cur_dev is getting the result code returned by the plink command, which is 0. Your read_dev function returns this code, so print(read_dev()) prints the 0.

Just say read_dev() instead of print(read_dev()).

It doesn't "print zero". It prints cur_dev which is returned by read_dev function, which happens to be zero. And it does so, because you told it to. Remove print function and it won't print anything."

If you want to explicitly set the exit code use sys.exit(cur_dev). Simply using a return value from a function does not do what you want it to.