Creating A Function That Can Convert A List Into A Dictionary In Python

I'm trying to create a function that will convert a given list into a given dictionary (where I can specify/assign values if I want). So for instance, if I have a list ['a', 'b',

Solution 1:

Pass enumerated list to dict constructor

>>> items = ['a','b','c']
>>> dict(enumerate(items, 1))
>>> {1: 'a', 2: 'b', 3: 'c'}

Here enumerate(items, 1) will yield tuples of element and its index. Indices will start from 1 (note the second argument of enumerate). Using this expression you can define a function inline like:

>>> func = lambda x: dict(enumerate(x, 1))

Invoke it like:

>>> func(items)
>>> {1: 'a', 2: 'b', 3: 'c'}

Or a regular function

>>> def create_dict(items):
        return dict(enumerate(items, 1))

Solution 2:

If the keys are just the index of the element in the list, as in your example:

{i+1: x for i, x in enumerate(mylist)}

Solution 3:

Iterate through the list and assign every value to a number (starting from 1).

def list_to_dict(items):
    return {n + 1: items[n] for n in range(len(items))}

Replace n + 1 with n if you want the dictionary to start from zero.