Python/psycopg2 WHERE IN statement
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.
})
For the IN
operator, you want a tuple instead of list, and remove parentheses from the SQL string.
# using psycopg2
data=('UK','France')
sql='SELECT * from countries WHERE country IN %s'
cur.execute(sql,(data,))
During debugging you can check that the SQL is built correctly with
cur.mogrify(sql, (data,))