Fuzzing server written in Python with SPIKE

I wanted to build a fuzzer in SPIKE, for my own server written in Python. But I didn't found any useful guids or tutorials, only a few scripts.

In server I have login page What I want to do is to send random data to login and password...

from flask import Flask
from flask import render_template, request, redirect, url_for, session
from flask_session import Session
import sqlite3

app = Flask("Flask - Lab")

DATABASE = 'library_database.db'

sess = Session()

@app.route('/', methods=['GET', 'POST'])
def index():
    con = sqlite3.connect(DATABASE)
    cur = con.cursor()
    cur.execute("select * from books")
    con.commit()
    books = \
        cur.fetchall()
    if request.method == "POST":
        user = request.form['login']
        password = request.form['password']
        if len(user) == 0 or len(password) == 0:
            session['admin'] = False
            session['user'] = False
            return redirect(url_for('login'))
        cur.execute("SELECT admin FROM users WHERE username = ? AND password = ?", (user, password))
        con.commit()
        admin = cur.fetchone()
        if admin and admin[0] == 1:
            session['admin'] = True
            session['user'] = False
            return render_template('main_view_admin.html', books=books)
        elif admin and admin[0] == 0:
            session['admin'] = False
            session['user'] = True
            return render_template('main_view.html', books=books)
        else:
            return render_template('login.html')
    elif request.method == 'GET':
        if 'admin' in session and session['admin']:
            return render_template('main_view_admin.html', books=books)
        elif 'user' in session:
            return render_template('main_view.html', books=books)
        else:
            return redirect(url_for('login'))
    con.close()

app.debug = True
app.secret_key = "secret_key"
app.run(host='0.0.0.0', port=8080)

Does anyone know SPIKE or have any links that might be helpful?