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In recent times, list of arsenalplayers wiki has become increasingly relevant in various contexts. What's the difference between [] and {} vs list() and dict()?. I understand that they are both essentially the same thing. But in terms of creating an empty list or dict, are there any differences? Meaning of list[-1] in Python - Stack Overflow.

I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte... slice - How slicing in Python works - Stack Overflow. The first way works for a list or a string; the second way only works for a list, because slice assignment isn't allowed for strings. Other than that I think the only difference is speed: it looks like it's a little faster the first way.

Try it yourself with timeit.timeit () or preferably timeit.repeat (). In relation to this, how can I pass a list as a command-line argument with argparse?. From another angle, don't use quotes on the command line 1 Don't use type=list, as it will return a list of lists This happens because under the hood argparse uses the value of type to coerce each individual given argument you your chosen type, not the aggregate of all arguments. You can use type=int (or whatever) to get a list of ints (or whatever)

How do I make a flat list out of a list of lists? If your list of lists comes from a nested list comprehension, the problem can be solved more simply/directly by fixing the comprehension; please see How can I get a flat result from a list comprehension instead of a nested list?. The most popular solutions here generally only flatten one "level" of the nested list. See Flatten an irregular (arbitrarily nested) list of lists for solutions that ... From another angle, is the a short syntax for joining a list of lists into a single list ( or iterator) in python?

For example I have a list as follows and I want to iterate over a,b and c. array – when to use? The list is the part of python's syntax so it doesn't need to be declared whereas you have to declare the array before using it.

You can store values of different data-types in a list (heterogeneous), whereas in Array you can only store values of only the same data-type (homogeneous). python - Access item in a list of lists - Stack Overflow. You can access the elements in a list-of-lists by first specifying which list you're interested in and then specifying which element of that list you want. For example, 17 is element 2 in list 0, which is list1[0][2]: Furthermore, what is the syntax to insert one list into another list in python?. Equally important, [duplicate] Asked 15 years, 2 months ago Modified 6 years, 5 months ago Viewed 351k times

How to cast List<Object> to List<MyClass> - Stack Overflow. (List<Customer>)(Object)list; you must be sure that at runtime the list contains nothing but Customer objects. Critics say that such casting indicates something wrong with your code; you should be able to tweak your type declarations to avoid it. But Java generics is too complicated, and it is not perfect.