For learning reason, you can create 2d array ~ matrix in one row like:

 matrix2 = [[0 for vc in range(0, v)] for vr in range(0, r)]

Since python is a funcational language, for learning reason, you can define a map/ reduce over matrix like:

 def map(matrix, r,c, fn):
 for vr in range(0, r): 
 for vc in range(0, c): 
 fn(matrix[r][c])