python编程从一个ftp传输文件到另一个ftp服务器

"""
皮蛋编程(https://www.pidancode.com)
创建日期：2022/4/3
功能描述：python编程从一个ftp传输文件到另一个ftp服务器
"""

import ftplib, sys
ftp1 = ftplib.FTP("127.0.0.1", "book", "bookpw")
ftp1.cwd("/Dir")
ftp2 = ftplib.FTP("www.holdenweb.com", "bookuser", "bookpw")
ftp2.cwd("/public")
sock1 = ftp1.transfercmd("RETR a.zip")
sock2 = ftp2.transfercmd("STOR b.zip")
flen = 0
while 1:
    block = sock1.recv(1024)        
    if len(block) == 0:
        break
    flen += len(block)
    while len(block) > 0:
        sentlen = sock2.send(block)
        block = block[sentlen:]
print("Transferred", flen, "bytes")
sock1.close()
sock2.close()
ftp1.quit()
ftp2.quit()