Why do i get an invalid syntax error on line 10 and 12 ?

# init
password_out = ''
case_change = ord('a') - ord('A')
encryption_key = (('a','m', ('b','h'), ('c','t'),('d', 'f'), ('e', 'g'),('f', 'k'),
    ('g', 'b'), ('h', 'p'), ('i', 'j'), ('j','w'), ('k','e'), ('l','r'),
    ('m', 'q'), ('n','s'), ('o','l'), ('p','n'), ('q','i'), ('r','u'), ('s','o'),
    ('t','x'), ('u','z'), ('v','y'), ('w','v'), ('x','d'), ('y','c'), ('z','a'))

# program greeting
print("This program will encrypt and decrypt user passwords\n")

# get selection (encrypt/decrypt)
which = input('Enter (e) to encrypt, (d) to decrypt')
while which != 'e' and which != 'd':
    which = input('\nINVALID - Enter 'e' (e) to encrypt, (d) to decrypt')
encrypting = (which == 'e')

# get password
password_in = input('Enter your password: ')

# perform encryption / decryption
if encrypting:
    from_index = 0
    to_index = 1
else:
    from_index = 1
    to_index = 0

case_changer = ord('a') - ord('A')

for ch in password_in:
    letter_found = False

    for t in encryption_key:
        if ('a' <= ch and ch <= 'z') and ch == t[from_index]:
            password_out = password_out + t[to_index]
            letter_found = True
        elif('A' <= ch and ch <='Z') and chr(ord(ch) + 32) == t[from_index]:
            password_out = password_out + chr(ord(t[to_index]) - case_changer)
            letter_found = True

    if not letter_found:
        password_out = password_out + ch

# output
if encrypting:
    print('Your encrypted password is {}'.format(password_out))
else:
    print('Your decrypted password is {}'.format(password_out))