Python ftplib.error_perm 550：没有这样的文件或目录？

我写了一个Python脚本，这是我尝试从我的服务器自动执行每日ftp传输的一部分。我已经测试了一些文件和文件类型（html，mp3，png，jpg等）的脚本，并且一切看起来都很顺利。但是，当我尝试下载一个简单的文本文件'file.txt'（9 kb）时，虽然我解释了文本文件并将其从二进制文件切换到文本模式以进行传输，但下载失败。以下异常被抛出FTPLIB：Python ftplib.error_perm 550：没有这样的文件或目录？

ftplib.error_perm: 550 file.txt: No such file or directory

这里是我的脚本：

from ftplib import FTP_TLS, error_perm 
import os 


def open_connection(server, user, pwd, work_dir=None): 
    global ftps 
    try: 
     ftps = FTP_TLS(host=server) 
     ftps.login(user=user, passwd=pwd) 
     ftps.prot_p() # switch to secure data connection 
     if work_dir != None: 
      ftps.cwd(work_dir) 
     else: 
      pass 
    except: 
     pass  


def download_file(remote_path, local_path): 
    remote_file = os.path.basename(remote_path) 
    local_file_path = os.path.join(local_path, remote_file) 

    # differentiate between text and binary files 
    file_type, encoding = guess_type_and_encoding(remote_file) 

    # possibly needs a permission exception catch 
    if file_type.split("/")[0] == "text" and encoding == None: 
     # use text mode for transfer 
     local_file = open(local_file_path, 'w') 
     def callback(line): local_file.write(line + "\n") 
     ftps.retrlines("RETR " + remote_file, callback) 
     local_file.close() 

    else: 
     # use binary mode for transfer 
     local_file = open(local_file_path, 'wb') 
     ftps.retrbinary("RETR " + remote_file, local_file.write) 
     local_file.close() 
    return 


def guess_type_and_encoding(filename): 
    from mimetypes import guess_type, add_type 
    add_type('text/x-python-win', '.pyw') # not in tables 
    mimetype, encoding = guess_type(filename, False) # allow extras 
    mimetype = mimetype or "?/?" # type unknown 
    return mimetype, encoding 


open_connection(server, user, pwd, work_dir) 
download_file("/files/dir/file.txt", "/Users/username/Desktop") 
ftps.close()

我不明白，为什么引发错误！？正确提供参数'remote_path'和'local_path'。两条路都存在！ “file.txt的”存在下的服务器/文件/目录和/用户/用户名/桌面点到我的桌面在OS X上

下面是详细FTPLIB错误：

Traceback (most recent call last): 
    File "ftp2.py", line 138, in <module> 
     download_file("/files/dir/file.txt", "/Users/username/Desktop") 
    File "ftp2.py", line 93, in download_file 
     ftps.retrlines("RETR " + remote_file, callback) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 735, in retrlines 
     conn = self.transfercmd(cmd) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 376, in transfercmd 
     return self.ntransfercmd(cmd, rest)[0] 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 710, in ntransfercmd 
     conn, size = FTP.ntransfercmd(self, cmd, rest) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 339, in ntransfercmd 
     resp = self.sendcmd(cmd) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 249, in sendcmd 
     return self.getresp() 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ftplib.py", line 224, in getresp 
     raise error_perm, resp 
ftplib.error_perm: 550 file.txt: No such file or directory

任何帮助是很大的赞赏。谢谢。 :)

来源

2016-08-16 St4rb0y

尝试与remote_path取代remote_file 在ftps.retrlines("RETR " + remote_file, callback) 。

来源

2017-06-05 09:51:47

Python ftplib.error_perm 550：没有这样的文件或目录？

回答

相关问题