Question

Disclaimer: I am a beginner in python but have Drupal programming experience.

I have this:

f = [1.jpg, 2.jpg, 3.jpg] #unknown amount at runtime

and I need to do this

call(['c:/program files/ABBYY FineReader 10/finereader.exe',f])

BUT instead of simply ending the call with f, it should do this

call(['c:/program files/ABBYY FineReader 10/finereader.exe', 1.jpg,2.jpg,3.jpg])

How can I unpack f? Is unpacking the right approach?

Answer 1

Would this work? By performing + on two lists, you get a new list back that is the concatenation of the first list with the second.

call(['c:/program files/ABBYY FineReader 10/finereader.exe'] + f)

You can also append further arguments to the list in-place with the extend() method:

command = ['c:/program files/ABBYY FineReader 10/finereader.exe']
command.extend(f)
call(command)