4 ms·

The __contains__ does this for you with the more readable 'in' keyword.

• jzwinck 12y ago
  That checks whether a key exists. Your parent wants to check whether a value exists. Not that I'm any huge fan of it, considering how it would be inefficient by default.
  • dec0dedab0de 12y ago
    You can use the values, or items method with in.