Python: 从 FTP 服务器下载文件

urllib2.urlopen handles ftp links.

Use urllib2. For more specifics, check out this example from doc.python.org:

Here's a snippet from the tutorial that may help

import urllib2


req = urllib2.Request('ftp://example.com')
response = urllib2.urlopen(req)
the_page = response.read()

The requests library doesn't support ftp:// links.

To download a file from an FTP server you could use urlretrieve:

import urllib.request


urllib.request.urlretrieve('ftp://server/path/to/file', 'file')
# if you need to pass credentials:
#   urllib.request.urlretrieve('ftp://username:password@server/path/to/file', 'file')

Or urlopen:

import shutil
import urllib.request
from contextlib import closing


with closing(urllib.request.urlopen('ftp://server/path/to/file')) as r:
with open('file', 'wb') as f:
shutil.copyfileobj(r, f)

Python 2:

import shutil
import urllib2
from contextlib import closing


with closing(urllib2.urlopen('ftp://server/path/to/file')) as r:
with open('file', 'wb') as f:
shutil.copyfileobj(r, f)

You Can Try this

import ftplib


path = 'pub/Health_Statistics/NCHS/nhanes/2001-2002/'
filename = 'L28POC_B.xpt'


ftp = ftplib.FTP("Server IP")
ftp.login("UserName", "Password")
ftp.cwd(path)
ftp.retrbinary("RETR " + filename, open(filename, 'wb').write)
ftp.quit()

    import os
import ftplib
from contextlib import closing


with closing(ftplib.FTP()) as ftp:
try:
ftp.connect(host, port, 30*5) #5 mins timeout
ftp.login(login, passwd)
ftp.set_pasv(True)
with open(local_filename, 'w+b') as f:
res = ftp.retrbinary('RETR %s' % orig_filename, f.write)


if not res.startswith('226 Transfer complete'):
print('Downloaded of file {0} is not compile.'.format(orig_filename))
os.remove(local_filename)
return None


return local_filename


except:
print('Error during download from FTP')

As several folks have noted, requests doesn't support FTP but Python has other libraries that do. If you want to keep using the requests library, there is a requests-ftp package that adds FTP capability to requests. I've used this library a little and it does work. The docs are full of warnings about code quality though. As of 0.2.0 the docs say "This library was cowboyed together in about 4 hours of total work, has no tests, and relies on a few ugly hacks".

import requests, requests_ftp
requests_ftp.monkeypatch_session()
response = requests.get('ftp://example.com/foo.txt')

Try using the wget library for python. You can find the documentation for it here.

import wget
link = 'ftp://example.com/foo.txt'
wget.download(link)

urlretrieve is not work for me, and the official document said that They might become deprecated at some point in the future.

import shutil
from urllib.request import URLopener
opener = URLopener()
url = 'ftp://ftp_domain/path/to/the/file'
store_path = 'path//to//your//local//storage'
with opener.open(url) as remote_file, open(store_path, 'wb') as local_file:
shutil.copyfileobj(remote_file, local_file)

If you want to take advantage of recent Python versions' async features, you can use aioftp (from the same family of libraries and developers as the more popular aiohttp library). Here is a code example taken from their client tutorial:

client = aioftp.Client()
await client.connect("ftp.server.com")
await client.login("user", "pass")
await client.download("tmp/test.py", "foo.py", write_into=True)