import os, getpass
import urllib.request
filename = 'ftp.txt'
password = getpass.getpass('Pswd?')

remoteaddr = 'ftp://collinsctk:%s@172.16.1.2/%s;type=i' % (password, filename)
print('Downloading', remoteaddr)

#urllib.request.urlretrieve(remoteaddr, filename)

remotefile = urllib.request.urlopen(remoteaddr)
localfile = open(filename, 'wb')
localfile.write(remotefile.read())
localfile.close()
remotefile.close()