Sftp error New Help

[ejmmanning]

Traceback (most recent call last):
  File "Juniper.py", line 66, in <module>
    device_information()
  File "Juniper.py", line 26, in device_information
    device_connection(dev_ip,dev_username,dev_password)
  File "Juniper.py", line 54, in device_connection
    sftp_transfer(r)
  File "Juniper.py", line 61, in sftp_transfer
    c.put("%r" %r)
  File "/usr/local/lib/python2.7/dist-packages/pysftp.py", line 349, in put
    confirm=confirm)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/sftp_client.py", line 
667, in put
    file_size = os.stat(localpath).st_size
OSError: [Errno 2] No such file or directory: "<closed file 
'juniper-results20150519-191928.txt', mode 'a' at 0x24a0780>"





import sys
import pysftp
import datetime
import sys
import os



from jnpr.junos import Device

def device_information():
    while True:
        dev_ip = raw_input("Please enter Host IP? ")
        if dev_ip != "":
            while True:
                dev_username = raw_input("Please enter username? ")
                if dev_username !="":
                    while True:
                        dev_password = raw_input("Please enter password? ")
                        if dev_password !="":
                            device_connection(dev_ip,dev_username,dev_password)

                            return

                        else:
                           print(" Please enter a valid password?")

                else:
                    print(" Please enter a valid Username?")
        else:
            print(" Please enter a valid Host IP?")



def device_connection(dev_ip,dev_username,dev_password):
    file = datetime.datetime.now().strftime("%Y%m%d-%H%M%S")
    dev = Device(host = dev_ip,user = dev_username, password = dev_password)
    dev.open()
    f = open('show-command.txt')

    for line in iter(f):
        show_command = dev.cli(line)
        r = open("juniper-results" + file + ".txt",'a')
        r.write("***"+ line)
        r.write(show_command)
        r.write('\n')
        r.close()

    sftp_transfer(r)
    return


def sftp_transfer(r):

    c = pysftp.Connection(host = "10.72.129.35",port = 22, username = 
"Anonymous" , password = "Anonymous" )
    c.put("%r" %r)
    return

#sftp_transfer()

device_information()
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