You need to recursively loop over the list and check if an item is iterable(strings are iterable too, but skip them) or not. itertools.chain will not work for [1,[2,2,2],4] because it requires all of it’s items to be iterable, but 1 and 4 (integers) are not iterable. That’s why it worked for the second one … Read more
While the hierarchy you posted above really doesn’t make much sense to me (seems RoomType and Room are backwards), I’ll post an example to go with it: Hotels.SelectMany(h => h.RoomType) .Select(rt => rt.Room.Id) .Distinct() .ToArray();
Just use a list comprehension: nested_lst_of_tuples = [tuple(l) for l in nested_lst] Demo: >>> nested_lst = [[‘tom’, ‘cat’], [‘jerry’, ‘mouse’], [‘spark’, ‘dog’]] >>> [tuple(l) for l in nested_lst] [(‘tom’, ‘cat’), (‘jerry’, ‘mouse’), (‘spark’, ‘dog’)]
Using list comprehension: >>> lst = [[‘a’,’b’,’c’], [1,2,3], [‘x’,’y’,’z’]] >>> lst2 = [item[0] for item in lst] >>> lst2 [‘a’, 1, ‘x’]
Nested Group Lists .just-padding { padding: 15px; } .list-group.list-group-root { padding: 0; overflow: hidden; } .list-group.list-group-root .list-group { margin-bottom: 0; } .list-group.list-group-root .list-group-item { border-radius: 0; border-width: 1px 0 0 0; } .list-group.list-group-root > .list-group-item:first-child { border-top-width: 0; } .list-group.list-group-root > .list-group > .list-group-item { padding-left: 30px; } .list-group.list-group-root > .list-group > .list-group > .list-group-item … Read more
This makes a list with five references to the same list: data = [[None]*5]*5 Use something like this instead which creates five separate lists: >>> data = [[None]*5 for _ in range(5)] Now it behaves as expected: >>> data[0][0] = ‘Cell A1’ >>> print(data) [[‘Cell A1’, None, None, None, None], [None, None, None, None, None], … Read more
<ul> <li>Element</li> <ul> <li>Subelement…</li> You can pretty freely use HTML inside javadoc comments. Update: Because it came up, I tried <ul> <li>one</li> <ul> <li>one point one</li> </ul> </ul> and get one one point one I agree proper nesting is better.
To explain “why”: The + operation adds the array elements to the original array. The array.append operation inserts the array (or any object) into the end of the original array, which results in a reference to self in that spot (hence the infinite recursion in your case with lists, though with arrays, you’d receive a … Read more