support copyfrom

[borissmidt]

To insert mutliple values at once there is the sqlc copyfrom, but it it is unsupported in sqlc-gen-python

But it should be quite easy to implement using an executemany statement:
https://stackoverflow.com/questions/13020908/sql-multiple-inserts-with-python

rows = []

for row in range(sheet.nrows):
    """name is in the 0th col. email is the 4th col."""
    name = sheet.cell(row, 0).value  
    email =  sheet.cell(row, 4).value
    rows.append((name, email))

db = MySQLdb.connect(host=host, user=user, db=dbname, passwd=pwd)
cursor = db.cursor()
cursor.executemany("""INSERT INTO mailing_list (name,email) VALUES (%s,%s)""", rows)