I cant create database with python in postgres

I am doing one lesson and repeat everything, but I cant create a database. There 2 problems:

psycopg2.OperationalError

peewee.OperationalError

This is my code:

import csv
from peewee import *

db = PostgresqlDatabase(database='test', user='postgres', password='123', host='localhost')


class Coin(Model):
    name = CharField()
    url = TextField()
    price = CharField()

    class Meta:
        database = db


def main():

    db.connect()
    db.create_tables([Coin])

    with open('cmc.csv') as f:
        order = ['name', 'url', 'price']
        reader = csv.DictReader(f, fieldnames=order)

        coins = list(reader)

        with db.atomic():
            
            for index in range(0, len(coins), 100):
                Coin.insert_many(coins[index:index+100]).execute()


if __name__ == '__main__':
    main()

source https://stackoverflow.com/questions/74082638/i-cant-create-database-with-python-in-postgres