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ftp download script

Tonyalmeida

I upgraded to 3.6 python and now I can't run my script that runs fine in 2.7, I am not sure why, any ideas?

current code

import arcpy
import os
import os.path
from ftplib import FTP

directory = "\\maps" #location of folder on ftp
copy_files = "*.pdf" # This is the files i would like to copy from the ftp site

folder = "D:\\temp\\temp\\"

out_path = os.path.join(folder)

#FTP logon
ftp = FTP("ftp.proper.com")
ftp.login('blahuser', 'blahpass')

# navigate folder
ftp.cwd(os.path.join(directory))
print ("Changed to " + os.path.join(directory, copy_files))

#Now get a list of all files in the folder
filenames = ftp.nlst()
print (filenames)

#and loop through the filenames to download the files to your local 'folder'
for f in filenames:
    with open(os.path.join(out_path, f), 'wb') as local_file:
        ftp.retrbinary('RETR '+ f, local_file.write)

ftp.close()
print ("closed ftp connection")
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Error

Traceback (most recent call last):
  File "C:/Python Scripts/FPT/TransferFromFtp.py", line 15, in <module>
    ftp.login('blahuser', 'blahpass')
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\ftplib.py", line 420, in login
    resp = self.sendcmd('PASS ' + passwd)
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\ftplib.py", line 273, in sendcmd
    return self.getresp()
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\ftplib.py", line 246, in getresp
    raise error_perm(resp)
ftplib.error_perm: 530 Not logged in.‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

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Accepted answers

All comments

DonShawEsri

Chalk it up to being Monday... glad it worked!

Tonyalmeida

Yes it did.

230-Server: ftp2.census.gov
230-
230-Personal Identifiable Information (PII) shall not be placed on the FTP
230-server without prior special arrangement and in conjunction with ITSO.
230-
230-NOTE: The data available for anonymous FTP download on this FTP server are
230-also available over the Web:
230-http://www2.census.gov
230 Login successful.

Tonyalmeida

Not sure what happened but I re-started my pc and code ran fine. Not sure what held it up.

DonShawEsri

Hi Tony,

I'd like to test the ftplib library in your Python 3 environment with an open FTP site to make sure that it can indeed connect to FTP sites. Does the login validate? Does the directory print?

<SPAN class="keyword token">from</SPAN> ftplib <SPAN class="keyword token">import</SPAN> FTP
ftp <SPAN class="operator token">=</SPAN> FTP<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'ftp2.census.gov'</SPAN><SPAN class="punctuation token">)</SPAN>

<SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>ftp<SPAN class="punctuation token">.</SPAN>login<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>‍‍‍

<SPAN class="keyword token">print</SPAN><SPAN class="punctuation token">(</SPAN>ftp<SPAN class="punctuation token">.</SPAN>dir<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Tonyalmeida

Made the change and still gives me the same error

<SPAN class="keyword token">import</SPAN> arcpy
<SPAN class="keyword token">import</SPAN> os
<SPAN class="keyword token">import</SPAN> os<SPAN class="punctuation token">.</SPAN>path
<SPAN class="keyword token">from</SPAN> ftplib <SPAN class="keyword token">import</SPAN> FTP

directory <SPAN class="operator token">=</SPAN> <SPAN class="string token">"\\maps"</SPAN> <SPAN class="comment token">#location of folder on ftp</SPAN>
copy_files <SPAN class="operator token">=</SPAN> <SPAN class="string token">"*.pdf"</SPAN> <SPAN class="comment token"># This is the files i would like to copy from the ftp site</SPAN>

folder <SPAN class="operator token">=</SPAN> <SPAN class="string token">"D:\\temp\\temp\\"</SPAN>

out_path <SPAN class="operator token">=</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>folder<SPAN class="punctuation token">)</SPAN>

<SPAN class="comment token">#FTP logon</SPAN>
<SPAN class="keyword token">with</SPAN> FTP<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"ftp.proper.com"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> ftp<SPAN class="punctuation token">:</SPAN>
    ftp<SPAN class="punctuation token">.</SPAN>login<SPAN class="punctuation token">(</SPAN><SPAN class="string token">"blahuser"</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"blahpass"</SPAN><SPAN class="punctuation token">)</SPAN>


    <SPAN class="comment token"># navigate folder</SPAN>
    ftp<SPAN class="punctuation token">.</SPAN>cwd<SPAN class="punctuation token">(</SPAN>os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>directory<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">print</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="string token">"Changed to "</SPAN> <SPAN class="operator token">+</SPAN> os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>directory<SPAN class="punctuation token">,</SPAN> copy_files<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">)</SPAN>

    <SPAN class="comment token">#Now get a list of all files in the folder</SPAN>
    filenames <SPAN class="operator token">=</SPAN> ftp<SPAN class="punctuation token">.</SPAN>nlst<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
    <SPAN class="keyword token">print</SPAN> <SPAN class="punctuation token">(</SPAN>filenames<SPAN class="punctuation token">)</SPAN>

    <SPAN class="comment token">#and loop through the filenames to download the files to your local 'folder'</SPAN>
    <SPAN class="keyword token">for</SPAN> f <SPAN class="keyword token">in</SPAN> filenames<SPAN class="punctuation token">:</SPAN>
        <SPAN class="keyword token">with</SPAN> open<SPAN class="punctuation token">(</SPAN>os<SPAN class="punctuation token">.</SPAN>path<SPAN class="punctuation token">.</SPAN>join<SPAN class="punctuation token">(</SPAN>out_path<SPAN class="punctuation token">,</SPAN> f<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">,</SPAN> <SPAN class="string token">'wb'</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="keyword token">as</SPAN> local_file<SPAN class="punctuation token">:</SPAN>
            ftp<SPAN class="punctuation token">.</SPAN>retrbinary<SPAN class="punctuation token">(</SPAN><SPAN class="string token">'RETR '</SPAN><SPAN class="operator token">+</SPAN> f<SPAN class="punctuation token">,</SPAN> local_file<SPAN class="punctuation token">.</SPAN>write<SPAN class="punctuation token">)</SPAN>

    ftp<SPAN class="punctuation token">.</SPAN>close<SPAN class="punctuation token">(</SPAN><SPAN class="punctuation token">)</SPAN>
<SPAN class="keyword token">print</SPAN> <SPAN class="punctuation token">(</SPAN><SPAN class="string token">"closed ftp connection"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Tonyalmeida

Nope, I can ran that same script in 2.7 just fine. Then run it in 3.6 and gives me that error.

GeoJosh

Hi Tony,

I'm wondering if you need to keep the connection to the FTP open while you login, as demonstrated in the documentation for the ftplib module.

ftplib — FTP protocol client — Python 3.9.0 documentation

Something like this:

with FTP("ftp.proper.com") as ftp:

ftp.login('blahuser', 'blahpass')

# ... do more stuff

bixb0012

The error message is saying you aren't logged in. Have the credentials possibly changed recently?

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