Read file from server

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May 19th, 2004, 06:03 AM

luckyboy

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Read file from server

[QUOTE]

Hi
I have written a code to connect to a sever,path ,open a file , count the lines and display the the contents of the file and the number of lines,

Now I am confused how to copy the file to my hard disk, Can someone help me
Thanks

Code:

import os,sys
#os.chdir('/')
os.chdir('\\\\server name and path')
openfile=open('file name','rb',)
count=0
while 1:
    readfile=openconsole.read()
    if not readfile:
        break
    count=+readfile.count('\n') 
    print readfile
    print count
openfile.close()

May 19th, 2004, 07:43 AM

netytan

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If the file is accessable though the internet then your best bet is probably the urllib module; if only because its so easy to use. Heres an example of how this might work:

Code:

>>> import urllib
>>> page = urllib.urlopen('http://www.python.org/').read()
>>> print page
...

Hope this helps,

Mark.

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May 19th, 2004, 04:18 PM

sfb

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It looks like you're getting it from a UNC path, like "\\server1\files\somefile.ext", so take a look at the shutil module ('Shell Utilities')

Code:

>>> import shutil
>>> shutil.copy('\\\\server\\files\\file.ext', 'c:\\')

May 19th, 2004, 09:53 PM

netytan

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Shutil can only be used to move a file on your local machine, so not much help here. Heres a rewriten version of the line count program if it is of any help to anyone.

Code:

count = 0

for line in file('path/to/local/file.dat', 'rb'):
    count = count + 1
    print '%s: %s' % (count, line)
print 'Total lines:', count

This should print something like this:

Quote:

1: line one
2: line two
3: line three
Total lines: 3

Mark.

May 20th, 2004, 02:02 AM

sfb

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Quote:

Originally Posted by luckyboy

Now I am confused how to copy the file to my hard disk

Quote:

Originally Posted by netytan

Shutil can only be used to move a file on your local machine, so not much help here.

It can copy too...

May 20th, 2004, 07:06 AM

netytan

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Oops, i missed that line in luckies post

. Anyway just to clarify

You can use use shutil to move and or copy files around, but only on the local machine. So retriving a file from a webserver is a little outa its reach. In which case you'll probably want to use the urllib module's.

In this example he was cd'ing to the directory which you dont need to do since file() accepts a full path to a file. Which is where the comfusion about your post came in.

Mark.

May 20th, 2004, 04:26 PM

sfb

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Quote:

Originally Posted by netytan

You can use use shutil to move and or copy files around, but only on the local machine.

It works over UNC shares too - \\server\file, which the original poster seems to be using:

"os.chdir('\\\\server name and path')"

Quote:

So retriving a file from a webserver is a little outa its reach. In which case you'll probably want to use the urllib module's.

Agreed, but ... what webserver?

Quote:

In this example he was cd'ing to the directory which you dont need to do since file() accepts a full path to a file. Which is where the comfusion about your post came in.
Mark.

Yes, ok, I wasn't really looking at the line-count part. I guess the ideal answer depends on whether luckyboy wants to:

Read the file on the server to manually make a copy of it locally, counting the lines in the process, or...

Count the lines in the file. Also, somehow make a copy locally.

---

Code:

data = file("\\\\server\\path\\file.txt").readlines()

print 'Total lines:', len(data)

(file defaults to opening with 'r'. It doesn't seem to make much sense to count the lines in a binary file...)

May 21st, 2004, 12:13 AM

netytan

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Ah, when somone says server i alutomatically assume that we're talking remote server, but surly if the server is local (a localhost - which lucky didn't mention) to the machine/network then all you have to do is provide the path to the file on the server to file().

But yes, this being the case, you could use shutil to make a copy of the file in your working directory if you so wished; although slightly pointless since you can use the file its current position on the system.

I'm not sure what your talking about with the while 'r' rather than 'rb' flag thing since in the example he's using 'rb'.

Edit: your example does count the total number of lines but still can't mimic the output of either examples (provided by myself or lucky) so as a way of retiriving a total number it works, but not quite what lucky wanted

Mark.

Last edited by netytan : May 21st, 2004 at 12:17 AM.

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