I'm beginning python and I'm trying to use a two-dimensional list, that I initially fill up with the same variable in every place. I came up with this: def initialize_twodlist(foo): twod_list ...

Jul 12, 2011 · I want to define a two-dimensional array without an initialized length like this: Matrix = [][] But this gives an error: IndexError: list index out of range

Dec 6, 2025 · Initializing 2D list in Python [duplicate] Asked 13 years, 10 months ago Modified 2 months ago Viewed 22k times

Apr 25, 2017 · Combine two lists into one multidimensional list Asked 13 years, 4 months ago Modified 3 years, 2 months ago Viewed 28k times

I am trying to create a 2d matrix so that each cell contains a list of strings. Matrix dimensions are known before the creation and I need to have access to any element from the beginning (not popu...

Description Finding the first element in a 2-D list can be rephrased as find the first column in the 2d list. Because your data structure is a list of rows, an easy way of sampling the value at the first index in …

Nov 20, 2010 · 26 This question already has answers here: List of lists changes reflected across sublists unexpectedly (18 answers) How to initialize a two-dimensional array (list of lists, if not using NumPy) …

Nov 14, 2021 · I have been trying to write a program in which we require to create a 2D list (array) in python with variable (not set while initialising) rows and columns. I know that in case of 1D list we …

this is a 2D array. The first indice access the rows in the matrix. The second indice access the column. so a [0] [1] means first row and second column. the matrix is a 2x2 grid.

I am trying to find a nice way to sort a 2d list , first by the 1st value , and then by the 2nd value. I think an example will be the best If I have a list