How to drop multiple tables in PostgreSQL using a wildcard

Use a comma separated list:

DROP TABLE foo, bar, baz;

If you realy need a footgun, this one will do it's job:

CREATE OR REPLACE FUNCTION footgun(IN _schema TEXT, IN _parttionbase TEXT) 
RETURNS void 
LANGUAGE plpgsql
AS
$$
DECLARE
    row     record;
BEGIN
    FOR row IN 
        SELECT
            table_schema,
            table_name
        FROM
            information_schema.tables
        WHERE
            table_type = 'BASE TABLE'
        AND
            table_schema = _schema
        AND
            table_name ILIKE (_parttionbase || '%')
    LOOP
        EXECUTE 'DROP TABLE ' || quote_ident(row.table_schema) || '.' || quote_ident(row.table_name) || ' CASCADE ';
        RAISE INFO 'Dropped table: %', quote_ident(row.table_schema) || '.' || quote_ident(row.table_name);
    END LOOP;
END;
$$;

SELECT footgun('public', 'tablename');

Here's another hackish answer to this problem. It works in ubuntu and maybe some other os too. do a \dt in postgres command prompt(the command prompt was running inside genome-terminal in my case). Then you'll see a lot of tables in the terminal. Now use ctrl+click-drag functionality of the genome-terminal to copy all tables' names. Open python, do some string processing(replace ' ' by '' and then '\n' by ',') and you get comma separated list of all tables. Now in psql shell do a drop table CTRL+SHIFT+V and you're done. I know it's too specific I just wanted to share. :)