import sqlite3
import json

conn = sqlite3.connect('quotes.db')

cursor = conn.cursor()

query = """
SELECT 
    quotes.timestamp, quotes.bid, quotes.ask, quotes.direction
FROM quotes
"""

cursor.execute(query)
tables = cursor.fetchall()

column_names = [desc [0] for desc in cursor.description]

data_list = []
for row in tables:
    data_dict = {column_names[i]: row[i] for i in range(len(column_names))}
    data_list.append(data_dict)

json_output = json.dumps(data_list, indent=4)
print(json_output)

cursor.close()