ftpxfer.py

python web programming 部分

import ftplib
# Establish ftp connections
ftp1 = ftplib.FTP("127.0.0.1", "book", "bookpw")
ftp1.cwd("/BookDir")
ftp2 = ftplib.FTP("www.holdenweb.com", "bookuser", "bookpw")
ftp2.cwd("/public")
# Prepare sockets for transfer
sock1 = ftp1.transfercmd("RETR bigfile.tgz")
sock2 = ftp2.transfercmd("STOR newfile.tgz")
# Loop through transfers until done
flen = 0                            # track data length
while 1:
    block = sock1.recv(1024)        # read up to a kilobyte
    if len(block) == 0:             # handle end of file
        break
    flen += len(block)              # update data length
    while len(block) > 0:           # until all handled
        sentlen = sock2.send(block) # write some data
        block = block[sentlen:]     # and delete from block
print "Transferred", flen, "bytes"
sock1.close()
sock2.close()
ftp1.quit()
ftp2.quit()