Make a list of dictionaries from a dict of lists

exhaustive.py

>>> parameters3 = {
...     'g': [100],
...     'h': [200, 201],
...     'i': [300, 301, 302],
... }
>>>
>>> from itertools import product
>>> def _exhaustive_list(parameters):
...     keys, values = list(parameters.keys()), list(parameters.values())
...     return [
...         dict(zip(keys, comb))
...         for comb in product(*values)
...     ]
...
>>> from pprint import pprint
>>> pprint(_exhaustive_list(parameters3))
[{'g': 100, 'h': 200, 'i': 300},
 {'g': 100, 'h': 201, 'i': 300},
 {'g': 100, 'h': 200, 'i': 301},
 {'g': 100, 'h': 201, 'i': 301},
 {'g': 100, 'h': 200, 'i': 302},
 {'g': 100, 'h': 201, 'i': 302}]