Question

How can I write a list comprehension to enumerate key: value pairs into 3-membered tuples from a Python dictionary?

d = {'one': 'val1', 'two': 'val2', 'three': 'val3', 'four': 'val4', 'five': 'val5'}

When I try this:

li = [(index, k, val) for index, k, val in enumerate(d.items())]

I get a ValueError: need more than 2 values to unpack

The desired output would be:

[(0, 'one', 'val1'),
 (1, 'two', 'val2'),
 (2, 'three', 'val3'),
 (3, 'four', 'val4'),
 (4, 'five', 'val5')]

Answer 1

Nest your tuples. But the order may not be as desired.

li = [(index, k, val) for index, (k, val) in enumerate(d.items())]