title: Adding values in a tuple that is in a list in python
body: <p>I retrieve some data from a database which returns it in a list of tuple values such as this: [(1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,), (1,)]</p>
  
  <p>Is there a function that can sum up the values in the list of tuples? For example, the above sample should return 18.</p>