check if a list in 2D list is repeated more than one time get the number of repetition

Question

someone to explain how I can check if a list in 2D list is repeated more than one time and get the number of repetition.

i can get the half of what i'm looking for with:

grid[i] in grid # check if there is a line in the 2D list

now I want to get the number of repetition

Answer 1

max(map(grid.count, grid))

Demo:

grid = [[1, 2],
        [3, 4],
        [1, 2]]

print(max(map(grid.count, grid)))      # prints 2

Hmm... after rereading the question, it seems you're actually just asking for grid.count(grid[i]). I guess that seemed so trivial that my mind was reading more into the question. Oh well.

Answer 2

Try this:

grid.count(max(grid, key=grid.count)))

Or:

max(map(grid.count, grid))