How can I rename files with a python script?

Question

On my plone site I have hundreds of files (pdf, doc, ...) in filefield of archetypes objects. Something went wrong during importation and all the filenames are missing. The problem is that when somebody wants to open the file, since the extension is missing, the browser doesn't always propose to open it with a viewer.

The user has to save the file and add an extension to open it.

Can I write a python script to rename all files with an extension depending on the filetype?

Thank you.

Answer 1

http://plone.org/documentation/manual/plone-community-developer-documentation/content/rename

you've all you need here :)

The important part is this: parent.manage_renameObject(id, id + "-old")

you can loop over the subobjects doing:

for i in context.objectIds():
 obj = context[i]
 context.manage_renameObject(i, i + ".pdf")

context is the folder where you put this script, the folder where you've all your pdfs

Answer 2

The standard library function os.rename(src, dst) will do the trick. That's all you need if you know what the extension should be (e.g. all the files are .pdf). If you have a mixed bag of .doc, .pdf, .jpg, .xls files with no extensions, you'll need to examine the file contents to determine the proper extension using something like python-magic.

import os

for fn in os.listdir(path='.'):
    os.rename(fn, fn + ".pdf")