Python/psycopg2 WHERE IN statement

Question

What is the correct method to have the list (countryList) be available via %s in the SQL statement?

# using psycopg2
countryList=[\'UK\',\'France\']

sql=\'S         


        

Answer 1

To expland on the answer a little and to address named parameters, and converting lists to tuples:

countryList = ['UK', 'France']

sql = 'SELECT * from countries WHERE country IN %(countryList)s'

cur.execute(sql, { # You can pass a dict for named parameters rather than a tuple. Makes debugging hella easier.
    'countryList': tuple(countryList), # Converts the list to a tuple.
})