import sys, paramiko

if len(sys.argv) < 3:
   print "usage: SFTP_test.py server_address local_file_to_upload"

server_address = sys.argv[1]
source_file = sys.argv[2]

dest_file = source_file
username = 'student'
password = 'student'
port = 22

# create a Transport object with the IP address of the server and the port (Port 22 for SSH)
t = paramiko.Transport((server_address, port))
# connect to the server with the username student and password student
t.connect(username=username, password=password)
# create an SFTP client from the Transport socket object
sftp = paramiko.SFTPClient.from_transport(t)
# upload the source file and call it the name stored in dest_file on the server
sftp.put(source_file, dest_file)
# close the socket/connection
t.close()