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

You can use dict comprehension: -

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

>>> {key: value for key, value in default.iteritems() if value}
{'a': ['alpha'], 'b': ['beta', 'gamma']}