About mysql cursor and iterator

Question

Imagine I have a mysql cursor and data read. The amount of data might be very big that I want to deal with one line each time.

An easy and straight forward way might

Answer 1

The MySQLdb cursor class implements the iterator protocol, so you can simply do this:

cursor.execute(sql)
for row in cursor:
    print row
    ...

Relevant code from MySQLdb.cursors.BaseCursor:

def __iter__(self):
    return iter(self.fetchone, None)