return list dictionary of the three biggest numbers in a list of dictionaries

def top_three(input):
  return sorted(input, key=lambda k: k['value'], reverse=True)[:3]
  
l = [
  {'name': 'Hector', 'value': 20},
  {'name': 'Gandalf', 'value': 100},
  {'name': 'John', 'value': 12},
  {'name': 'Aaron', 'value': 3}
]

top_three(l)