Threshold To Marked Grid — PY OPPE Question

You are given a rectangular matrix (a list of lists of numbers) and an integer threshold.

Return a new grid of the same shape (a list of lists of str) where each cell is:

'#' if the corresponding value in matrix is greater than or equal to threshold, and
'.' otherwise.

The original matrix must not be modified.

NOTE: This is a function-type question — you only write the function. Do not read input or print anything; a hidden checker calls your function and checks its return value.

Example

Arguments

[[1, 2], [3, 4]]
3

Returns

[['.', '.'], ['#', '#']]