Regexp not performing the same in FTP versus Python

[IamIan]

Hello all,

I'm trying to use a regular expression in an FTP script to list
certain files. When run in a standard FTP session the command:

dir ????????.??[oOdDnNmM]*

returns 48 files. When I use the following Python script it prints
roughly 12 files (a subset of the 48), ending with 'None':


import ftplib, traceback

ftp = ftplib.FTP('hos t')
ftp.login(user= 'user', passwd='pass')

try:
admFiles = ftp.dir('?????? ??.??[oOdDnNmM]*')
print admFiles
except:
traceback.print _exc

ftp.quit()


Is my Python syntax off?

Thank you.

[IamIan]

Re: Regexp not performing the same in FTP versus Python

It's strange but since more files have been added to this directory
the regexp appears to be working correctly. Sorry to bother the list
and thanks for your time.

Ian

[Marc 'BlackJack' Rintsch]

Re: Regexp not performing the same in FTP versus Python

In <1170978596.337 428.261110@h3g2 000cwc.googlegr oups.com>, IamIan wrote:

Hello all,
>
I'm trying to use a regular expression in an FTP script to list
certain files. When run in a standard FTP session the command:
>
dir ????????.??[oOdDnNmM]*
>
returns 48 files. When I use the following Python script it prints
roughly 12 files (a subset of the 48), ending with 'None':
>
[…]
>
Is my Python syntax off?

Your `re` syntax is off. What you give FTP is a shell or glob pattern,
not a regular expression for the `re` module.

The `fnmatch` module has a function to translate a glob pattern to a `re`
pattern:

In [8]: fnmatch.transla te('????????.??[oOdDnNmM]*')
Out[8]: '........\\...[oOdDnNmM].*$'

Ciao,
Marc 'BlackJack' Rintsch