Delete mat.py

mat.py

-def sub(M,m,n,x,y):
-    import numpy as np
-    inp = [[0 for a in range (m)]for s in range (n)]
-    mi = np.array(M)
-    for i in range(x,x+m):
-        for j in range(y,y+n):
-            inp[i-x][j-y]=mi[i,j]
-
-    print(inp)