grains.utils.flatten_list

grains.utils.flatten_list(nested_list)

Merge a list of lists to a single list.

Parameters

nested_list (list) – List containing other lists.

Returns

list – Flattened list.

Notes

• Only a single level (i.e. list of lists) is handled, see the second example.

• Several methods, such as list comprehension, monoid and loops, are proposed in https://stackoverflow.com/questions/952914/how-to-make-a-flat-list-out-of-list-of-lists. Here, the list comprehension approach is used.

Examples

>>> nested_list = [['some'], ['items']]
>>> flatten_list(nested_list)
['some', 'items']
>>> multiply_nested_list = [[['item'], 'within', 'item']]
>>> flatten_list(multiply_nested_list)
[['item'], 'within', 'item']