import numpy as np
import psycopg2 as pg 
import psycopg2.extras

connection = pg.connect("host=localhost port=5432 dbname=db_name user=postgres")

cursor = connection.cursor(cursor_factory=psycopg2.extras.DictCursor)
cursor.execute("SELECT * FROM users")

results = cursor.fetchall()
values = []
for row in results:
    values.append(dict(row))

print(values)

cursor.close()
connection.close()