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Tag: list

Substract two row values in dataframe python

Currently I have a sort of dataframe where I want to substract value from current row from the previous one. example: df = pd.Datafame([1,4,3,5,6],columns = [“time”)]) left 1 4 3 5 6 I want to iterate over these rows and store it in a list. So the list will get like this [-3,1,-2,-1]. So far I have this Now the

How to remove array from values in a dictionary

I have the following dictionary But I’d like to remove the lists so it looks like this: Is there a simple way to do this? I think I might be able to iterate through and remove the list. Thanks Answer In order to produce the required output you will need a list (set) of keys that should not be modified.

Cannot Change Individual Elements in an Array

I am trying to make a tic-tac-toe game, and I currently have a 3×3 tiled board grid to represent the game. When a user clicks a square, the program sets board[x][y] to 1. board = [[[0, 0, 0], [0, 0, 0], [0, 0, 0]] Unfortunately, whenever I click a tile, it seems to ignore whatever x value I put; every

How can I pass a list from one class to another?

I’m still pretty new to python so, as said in the title, I’m trying to pass a list from inside one class to another class. For example: As shown in the example I want a list from class one to be passed to class two so that it can then be used (printed in the example). Answer You should make

Output of split is not what I was expecting

I’m just learning python, and I’m having some problems reading a .txt file that I created. My objective: I have a txt file with a list of strings. I’m trying to read, process it and save every letter into a new list. example2.txt file: [one, two, THREE, one, two, ten, eight,cat, dog, bird, fish] [Alonso, Alicia, Bob, Lynn] , [red,