On 13Jun2018 19:51, Sharan Basappa <sharan.basappa at gmail.com> wrote: >Can anyone explain to me the purpose of "pattern" in the line below: > >documents.append((w, pattern['class'])) > >documents is declared as a list as follows: >documents.append((w, pattern['class'])) Not without a lot more context. Where did you find this code? Cheers, Cameron Simpson <cs at cskk.id.au>