Update app.py

import random, also using mixtral not vicuna

app.py

@@ -1,6 +1,7 @@
 # imports
 import gradio as gr
 from huggingface_hub import InferenceClient
+import random
 
 # lists for random gen, not the best format here but it runs fine
 book_genres = ["Adventure", "Romance","Mystery", "Science Fiction","Fantasy","Thriller","Horror","Historical Fiction","Biography","Autobiography","Self-Help","Non-Fiction","Science","Cooking","Travel","Dystopian","Young Adult","Children's","Poetry","Classic","Graphic Novel","Humor","Crime","Western","Memoir","Religion","Psychology","Philosophy","Business","Finance","Parenting","Health","Fitness","Art","Music","Sports","Politics","Education","Technology","Science Fiction Fantasy","Steampunk","Drama","Historical Non-Fiction","Biographical Fiction","Mythology","Anthology","Short Stories","Essays","Fairy Tales","Magic Realism","True Crime","Satire","Romantic Suspense","Paranormal","Urban Fantasy","War","Epic Fantasy","Contemporary Fiction","Legal Thriller","Espionage","Post-Apocalyptic","Time Travel","Cultural","Medical","Environmental","Artificial Intelligence","Cyberpunk","Space Opera","Alternate History","Historical Romance","Science Fiction Romance","Young Adult Fantasy","Middle Grade","Adventure Fantasy","Superhero","Graphic Memoir","Travel Memoir","Political Thriller","Economic","Psychological Thriller","Nature","True Adventure","Historical Mystery","Social Science","Science Biography","Space Exploration","Pop Culture","Art History","Culinary","Nature Writing","Family Drama","Classic Literature","Cultural History","Political Science","Economics","Essays and Criticism","Art Criticism","Criminal Justice","Historical Biography","Personal Development","Cookbook","Fashion","Crafts and Hobbies","Memoir","Essays","Graphic Non-Fiction", "Fantasy Romance"]