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('host')
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]

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]

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.translate('????????.??[oOdDnNmM]*')
Out[8]: '........\\...[oOdDnNmM].*$'

Ciao,
Marc 'BlackJack' Rintsch