Just like the download process had a complicated raw version, it is also possible to upload files “by
hand” using ntransfercmd(), as shown in advbinaryul.py.
from ftplib import FTP
import sys, getpass, os.path
BLOCKSIZE = 8192 # chunk size to read and transmit: 8 kB
if len(sys.argv) != 5:
print "usage: %s <host> <username> <localfile> <remotedir>" % (
sys.argv[0])
exit(2)
host, username, localfile, remotedir = sys.argv[1:]
password = getpass.getpass("Enter password for %s on %s: " % \
(username, host))
f = FTP(host)
f.login(username, password)
f.cwd(remotedir)
f.voidcmd("TYPE I")
fd = open(localfile, 'rb')
datasock, esize = f.ntransfercmd('STOR %s' % os.path.basename(localfile))
size = os.stat(localfile)[6]
bytes_so_far = 0
while 1:
buf = fd.read(BLOCKSIZE)
if not buf:
break
datasock.sendall(buf)
bytes_so_far += len(buf)
print "\rSent", bytes_so_far, "of", size, "bytes", \
"(%.1f%%)\r" % (100 * bytes_so_far / float(size))
sys.stdout.flush()
print
datasock.close()
fd.close()
f.voidresp()
f.quit()
Now we can perform an upload that continuously displays its status as it progresses:
root@erlerobot:~/Python_files# python binaryul.py localhost brandon patch8.gz /tmp
Enter password for brandon on localhost:
Sent 6408 of 6408 bytes (100.0%)