Python: An elegant way to delete empty lists from Python dictionary

Question

I have a dictionary as:

default = {\'a\': [\'alpha\'], \'b\': [\'beta\',\'gamma\'], \'g\': []}

I wish to eliminate the empty values as:

Answer 1

Michael's answer is correct.

Stepping back, you might be able to avoid creating those empty lists at all, by use of collections.defaultdict(list)

>>> import collections
>>> d = collections.defaultdict(list)
>>> d
defaultdict(, {})
>>> d["hobbits"].append("Frodo")
>>> d["hobbits"].append("Sam")
>>> d
defaultdict(, {'hobbits': ['Frodo', 'Sam']})