Code Challenge Bcryptkeeper, part 3

Link:

https://teamtreehouse.com/forum/code-challenge-bcryptkeeper-part-3

Challenge Task 3 of 3

Finally write a function named validate_password that takes a user and a password. It should return True if the provided password, when hashed, matches the user's password. Otherwise, return False.

Got through the first two parts of the challenge with:

from flask.ext.bcrypt import generate_password_hash
from flask.ext.bcrypt import check_password_hash

def set_password(User, string):
  User.password=generate_password_hash(string)
  return User

Then I tried this code for the third part of the challenge:

def validate_password(User, string):
  if User.password==check_password_hash(string)
    return True
  else:
    return False

..of course now it says:

Oops! It looks like Task 1 is no longer passing.

Probably some type of stupid error, but I don't know what to do to correct it..

Note: the 'Preview' button output hasn't been too helpful in giving error correction hints for this particular course.