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 …

Apr 11, 2011 · Agree with @Bogdan. This answer creates a string in which the list elements are joined together with no whitespace or comma in between. You can use ', '.join(list1) to join the …

Since a list comprehension creates a list, it shouldn't be used if creating a list is not the goal; it shouldn't be used simply to write a one-line for-loop; so refrain from writing [print(x) for x in …

Sep 20, 2010 · List slicing is quite flexible as it allows to replace a range of entries in a list with a range of ...

Jan 12, 2009 · Using e.g. List<Point> list, it would be necessary to instead say Point temp=list[3]; temp.x+=q; list[3]=temp;. It would be helpful if List<T> had a method Update<TP>(int index, …

Apr 4, 2009 · For one-level flatten, if you care about speed, this is faster than any of the previous answers under all conditions I tried.

Mar 11, 2015 · To print specific file present in the folders/sub-folders for eg : If you want to list just the csv files then : dir /b/s/A-D/o:gn *.csv >list.txt If you want to also include .xlsx files then the …

Create a list of keys/columns - object method to_list() and the Pythonic way: my_dataframe.keys().to_list() list(my_dataframe.keys()) Basic iteration on a DataFrame …

Jul 15, 2022 · Sometimes it's easier to just have 2 lists that are not linked as lookup columns. I'd remove them personally and use it as follows.

joined_list = [item for list_ in [list_one, list_two] for item in list_] It has all the advantages of the newest approach of using Additional Unpacking Generalizations - i.e. you can concatenate an …