SQL problem in python

[aiwarrior]

class db:
    def __init__(self): #constructor
        conn = sqlite3.connect(":memory:")
        conn.isolation_level = None
        self.cursor = conn.cursor()
        self.cursor.execute("CREATE TABLE database (album,filepath)")

    def add_entry(self, eone , etwo): #Add entry to database
        self.cursor.execute("INSERT INTO database (album,filepath)
VALUES (?,?)", ( eone , etwo ) )
        return 1 #TODO: exception handler

    def get_mediadb(self, print_db = False):
        self.cursor.execute('SELECT * FROM database')
        if (print_db == True):
            print self.cursor.fetchall()

    def get_value( self, column ):
        self.cursor.execute( "SELECT (?) FROM database", column )
        for n in self.cursor:
             print n

    def destructor(self):
        self.cursor.close()

if __name__ == "__main__":
    f = db()
    f.add_entry( "Pinkk Floyd", "fdgf" )
    f.add_entry( "Pink", "fdgf" )
   # f.get_mediadb(print_db=True)
    f.get_value(('filepath',))
    f.destructor()

When i run it the get_value() returns 'filepath' instead of the
columns. But if i dont use any variable and make the expression static
all goes on as its supposed to. What am i doing wrong?

PS: Dont mind the bad code