rows and columns in 2d array python code example
Example 1: create a 2d array in python
def build_matrix(rows, cols):
matrix = []
for r in range(0, rows):
matrix.append([0 for c in range(0, cols)])
return matrix
if __name__ == '__main__':
build_matrix(6, 10)
Example 2: two dimensional array python
# Creates a list containing 5 lists, each of 8 items, all set to 0
w, h = 8, 5;
Matrix = [[0 for y in range(h)] for x in range(w)]
Matrix[0][0] = 1
Matrix[0][6] = 3 # error! range...
Matrix[6][0] = 3 # valid