如何在Python中使用ftplib上传二进制文件？

Question

我的 python2 脚本使用这种方法很好地上传文件，但 python3 出现了问题，我不知道下一步该去哪里（谷歌搜索没有帮助）。

from ftplib import FTP
ftp = FTP(ftp_host, ftp_user, ftp_pass)
ftp.storbinary('STOR myfile.txt', open('myfile.txt'))

我得到的错误是

Traceback (most recent call last):
  File "/Library/WebServer/CGI-Executables/rob3/functions/cli_f.py", line 12, in upload
    ftp.storlines('STOR myfile.txt', open('myfile.txt'))
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 454, in storbinary
    conn.sendall(buf)
TypeError: must be bytes or buffer, not str

我尝试将代码更改为

from ftplib import FTP
ftp = FTP(ftp_host, ftp_user, ftp_pass)
ftp.storbinary('STOR myfile.txt'.encode('utf-8'), open('myfile.txt'))

但相反我得到了这个

Traceback (most recent call last):
  File "/Library/WebServer/CGI-Executables/rob3/functions/cli_f.py", line 12, in upload
    ftp.storbinary('STOR myfile.txt'.encode('utf-8'), open('myfile.txt'))
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 450, in storbinary
    conn = self.transfercmd(cmd)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 358, in transfercmd
    return self.ntransfercmd(cmd, rest)[0]
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 329, in ntransfercmd
    resp = self.sendcmd(cmd)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 244, in sendcmd
    self.putcmd(cmd)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 179, in putcmd
    self.putline(line)
  File "/Library/Frameworks/Python.framework/Versions/3.1/lib/python3.1/ftplib.py", line 172, in putline
    line = line + CRLF
TypeError: can't concat bytes to str

任何人都可以指出我正确的方向

Answer 1

问题不在于命令参数，而在于文件对象。由于您要存储二进制文件，因此需要使用 'rb' 标志打开文件：

>>> ftp.storbinary('STOR myfile.txt', open('myfile.txt', 'rb'))
'226 File receive OK.'

Answer 2

附加到 FTP 中的文件。

注意： 这不是 SFTP - 仅 FTP

import ftplib
ftp = ftplib.FTP('localhost')
ftp.login ('user','password')
fin = open ('foo.txt', 'r')
ftp.storbinary ('APPE foo2.txt', fin, 1)

参考：感谢诺亚