Category "list"

Combinations of 2 lists [duplicate]

Input: [1, 2, 3] [a, b] Expected Output: [(1,a),(1,b),(2,a),(2,b),(3,a),(3,b)] This works, but is there a better way without an if statemen

append values in for loop R as in python

I am trying to reproduce the following functions created in Python in R. # Python def square_area(side): return side * side results = [] for i in range(1

Converting a list to a linked list

I'm trying to figure out to convert a list to a linked list. I already have a class for the link but I'm trying to figure out how to convert a list to linked l

Test if all elements of a python list are False

How to return False if all elements are in a list are False? The given list is: data = [False, False, False]

How do i use comprehensions to output dictionary data after editing it and how to validate user input asking user to repeat

eList = [] while True: eDict = { "ID": "", "NAME": "", "EMAIL": "", "ADDRESS": "", "SALARY": ""} try:

How to append to a list in Terraform?

I have some code in the general form: variable "foo" { type = "list" default = [ 1,2,3 ] } resource "bar_type" "bar" { bar_field = "${var.foo}" } I wa

Nested for loop stop if null value using Scrapy

I use a nested for loop to get data of Weekdays. If one of the days is 'null' the loop stops at that day and doesn't get the rest of the days. I believe that I

How to get the first, middle and last element of a list scheme and prolog?

I am trying to write a function in Scheme and Prolog that returns first, middle and last item of a list. E.g., find([4,5,8,7,9],L), L = [4,8,9]. I came up with

Why does a Python list not have unique indices for contiguous duplicate elements?

I was storing a list with elements [0, 1, 2, 3, 4, 4] When I iterated through it and printed each element's index, my output was something like this: 0 1 2 3 4

react-beautiful-dnd - Invariant failed: Cannot find droppable entry with id

I was following along with a react-beautiful-dnd tutorial that uses react component classes instead of hooks. I was writing an equivalent program with modern re

RangeError (index): Invalid value: Valid value range is empty: 0

I am trying to fetch a list from API that is two methods fetchImages and fetchCategories. the first time it is showing a red screen error and then after 2 secon

RangeError (index): Invalid value: Valid value range is empty: 0

I am trying to fetch a list from API that is two methods fetchImages and fetchCategories. the first time it is showing a red screen error and then after 2 secon

Python: create a pandas data frame from a list

I am using the following code to create a data frame from a list: test_list = ['a','b','c','d'] df_test = pd.DataFrame.from_records(test_list, columns=['my_let

List within single quotes [duplicate]

I have a list which is in single quotes. '[{"Name":"name1","value":"value1"},{"name":"name2","value":"value2"}]' I receive this as an input p

Python Code line by line meaning

I have got a code and need to get the line by line meaning of this python code. marksheet = [] for i in range(0,int(input())): marksheet.append([raw_input(

How to add items to a list of lists

I aim to print a list of lists containing entry and exit times in the 24 hour decimal format from the "AM"-"PM" String format input by the user as a String arra

Python help on TKinter

i'm trying to make an brick destroyer game on python with TKinter for my school project, it's barely finished but i have a problem when it's about to break some

How to remove Duplicated elements from a List based on Two properties using Java 8 streams?

I'm trying to figure out how to write a stream in Java 8 that removes duplicate records based on a property and a condition, for example: +----+----------------

remove duplicates from 2d lists regardless of order [duplicate]

I have a 2d list a = [[1, 2], [1, 3], [2, 1], [2, 3], [3, 1], [3, 2]] How can I get the result: result = [[1,2],[1,3],[2,3]] Where dupli

Read text file and look for certain words from key word list

I am new to Python, and I am trying to build a script where I import text_file_1 that contains a body of text. I want the script to read the body of text, and l