Confiscate | Discover duplication glitches , abusive staff giving items | Game Engine library

Attempt

After reading a large json file and capturing only the 'text' column, I would like to add a column to dataframe and set all rows to a specific value:

a dataframe containing following contents

Y'all, I'm trying to alleviate some of my work in migrating from a face-to-face teaching environment to one that is remote for at least the next three months. To this end, I am trying to create randomized lists of eligible vocabulary words for quizzes. I can have it generate up to eighteen sets of words for an identical number of quizzes, but I seem to be fumbling with checking whether the randomly selected word is already part of that quiz, i.e. I am getting a ton of repeats. Since one word is taught per day, this means the first biweekly quiz will have ten eligible words; the second, twenty words; the third, thirty words; etc. Please see the code below, and thank you in advance for your help!