title: Python 3 - Return dictionary key of searched value
body: <p>I'm wanting to return the key of a list within a dictionary, if the searched value is contained within that list. I can't seem to figure it out, the closest I have got is to search the key and return the list :/</p>
  
  <p>Here's my code</p>
  
  <pre><code>mylist =   {'Bob':['Harry','Jenkins', 'Onion', 'Fred', 'Earl', 'Sam'],
              'Wayne':['Wallace', 'David', 'Eel', 'Perkins', 'Fruit', 'Angela'],
              'Jeff':['Aaron', 'Cameron', 'Keith', 'Winston', 'Geoff', 'Wayne']
              }
  
  
  def tester(name):
       if name in mylist:
          print (True)
          print(mylist.get(name))
  </code></pre>
  
  <p>So if I search the dictionary for 'Jenkins' it should return 'Bob'</p>