There are n instances of ftplib.FTP.
Funny thing is that I tried to run the code twice, concurrently, in two
separate IDLE instances. Each instance had four threads/ftp calls.
Again, only five ftp connections were allowed on my computer. The code
errored out on the sixth attempt.
I wonder if there' s some underlying software being called that has a
limit on the number of ftp connections allowed at any point in time.
I'm tempted to try this on cygwin to see if the behavior is different.
Derek
import ftplib, zipfile, datetime, os
from threading import Thread, Lock
class ftpDownload(Thread):
def __init__(self, year, quarter):
Thread.__init__(self)
self.quarter = str(quarter)
self.year = str(year)
self.filename = ""
self.ftp = ftplib.FTP('xxxxxxx')
self.ftp.login()
self.lock = Lock()
def run(self):
filehandle = open(self.filename,'wb')
self.ftp.retrbinary('RETR /xxxxx/xxxxxxx/' + self.year + '/QTR'
+ self.quarter + '/xxxxxxx.zip', filehandle.write)
filehandle.close()
self.ftp.close()
ftplist = []
for year in range(1990,2000):
for quarter in range(1,5):
current = ftpDownload(year, quarter)
ftplist.append(current)
current.start()
for job in ftplist:
job.join()
Jeremy Jones wrote:
db******@gmail.com wrote:
I'm trying to use ftp in python in a multi-threaded way on a windows
box - python version 2.4.3. Problem is that it appears that it's only
possible to have five instances/threads at one point in time. Errors
look like:
File "C:\Python24\lib\ftplib.py", line 107, in __init__
self.connect(host)
File "C:\Python24\lib\ftplib.py", line 132, in connect
self.welcome = self.getresp()
File "C:\Python24\lib\ftplib.py", line 208, in getresp
resp = self.getmultiline()
File "C:\Python24\lib\ftplib.py", line 194, in getmultiline
line = self.getline()
File "C:\Python24\lib\ftplib.py", line 184, in getline
if not line: raise EOFError
EOFError
Is it possible to have more than five simultaneous ftp connections?
Thanks.
Derek
I replied to this about 4 hours ago from my gmail email account (not my
google groups account associated with the same email addres), but
haven't seen it show up, so I apologize if this is a dupe.
Would you mind posting your code? Are you trying to pass the same FTP
connection object to all 5 threads?
- Jeremy M. Jones
