py_db.py

def insert_sample(table, sample):
    place_holder = ",".join(["{%d} " % idx for idx, _ in enumerate(sample.values())])
    columns = ", ".join(sample.keys())
    sql = "insert into `%s` (%s) values(%s)" % (table, columns, place_holder)
    exec_sql = sql.format(*sample.values())
    print exec_sql
    cursor.execute(exec_sql)

insert_sample('firmware', {"aaa":"bbb","ccc":"ddd"})