python return function(sql statement error)

I can return commands in my return function but something need to improve: 1. I am trying to get "enable" and "conf t"command in "function" field everytime.

B4(select function and type)(I can return my commands):

def readrouter(x, y):
        conn = sqlite3.connect('server.db')
        cur = conn.cursor()
        cur.execute("SELECT DISTINCT command FROM router WHERE   function =? or type = ?  ORDER BY key ASC",(x, y))
        read = cur.fetchall()
        return read;

a = raw_input("x:")
b = raw_input("y:")
for result in readrouter(a,b):
    print (result[0])

After:(select enable, conf t, and "commands")

def readrouter(x):
        conn = sqlite3.connect('server.db')
        cur = conn.cursor()
        cur.execute("SELECT DISTINCT command FROM router WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",(x))
        read = cur.fetchall()
        return read;

a = raw_input("x:")
for result in readrouter(a):
    print (result[0])

Hope you know what I mean but now I cant do what I want. It presents:

x:create vlan
Traceback (most recent call last):
  File "C:/Users/f0449492/Desktop/2015225/database.py", line 323, in <module>
    for result in readrouter(a):
  File "C:/Users/f0449492/Desktop/2015225/database.py", line 318, in readrouter
    cur.execute("SELECT  command FROM router WHERE   function =? or function='configure terminal' or function='enable'  ORDER BY key ASC",(x))
sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 7 supplied.

Process finished with exit code 1