How do I make a flat list out of a list of lists? - Stack Overflow
Dec 3, 2016 · A list of lists named xss can be flattened using a nested list comprehension: flat_list = [ x for xs in xss for x in xs ] The above is equivalent to: flat_list = [] for xs in xss: for x in xs: …
Command to list all files in a folder as well as sub-folders in windows
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 …
python - Removing duplicates in lists - Stack Overflow
Nov 1, 2011 · def make_unique(original_list): unique_list = [] [unique_list.append(obj) for obj in original_list if obj not in unique_list] return unique_list Some may consider list comprehension …
What is the syntax to insert one list into another list in python?
Sep 20, 2010 · List slicing is quite flexible as it allows to replace a range of entries in a list with a range of ...
Best way to remove elements from a list - Stack Overflow
Feb 2, 2014 · This makes indexing a list a[i] an operation whose cost is independent of the size of the list or the value of the index. When items are appended or inserted, the array of references …
TypeError: list indices must be integers or slices, not str
Sep 14, 2015 · 1. A list is used as if it were a dictionary 1.1. Index a list as if it was a dictionary. This case commonly occurs when a json object is converted into a Python object but there's a …
Array versus List<T>: When to use which? - Stack Overflow
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, …
How to list all installed packages and their versions in Python?
For Windows 10, I think this is what you are looking for a list of available installed Pythons. This is different from a list of packages as you can see below. Also, on Ubuntu 20.04, I think the …
Sum a list of numbers in Python - Stack Overflow
a is a running reference to the previous value in the list, hence it is initialized to the first element of the list and the iteration occurs over the rest of the list, updating a after it is used in each …
Quick way to create a list of values in C#? - Stack Overflow
How to initialize a list of strings (List<string>) with many string values (14 answers) Closed 8 months ago . I'm looking for a quick way to create a list of values in C#.