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if not isinstance(M[0], list):

M = [M]

rows = len(M)

cols = len(M[0])

MT = []

while len(MT) < dim:

MT.append([])

while len(MT[-1]) < dim:

MT[-1].append(0.0)

for i in range(rows):

for j in range(cols):

MT[j][i] = M[i][j]

print("Transpose Array")

for i in range(rows):

row = '|'

for b in range(cols):

row = row + ' ' + str(MT[i][b])

print(row + ' ' + '|')

# write a program to add two matrix

A = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

B = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

rowsA = len(A)

colsA = len(A[0])

rowsB = len(B)

colsB = len(B[0])

if rowsA != rowsB or colsA != colsB:

raise ArithmeticError('Matrices are NOT the same size.')

C = []

while len(C) < rowsA:

C.append([])

while len(C[-1]) < colsB:

C[-1].append(0.0)

for i in range(rowsA):

for j in range(colsB):

C[i][j] = A[i][j] + B[i][j]

print("Added Array")

for i in range(rowsA):

row = '|'

for b in range(colsA):

row = row + ' ' + str(C[i][b])

print(row + ' ' + '|')

# write a program to subtract two matrix

A = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

B = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

rowsA = len(A)

colsA = len(A[0])

rowsB = len(B)

colsB = len(B[0])

if rowsA != rowsB or colsA != colsB:

raise ArithmeticError('Matrices are NOT the same size.')

C = []

while len(C) < rowsA:

C.append([])

while len(C[-1]) < colsB:

C[-1].append(0.0)

for i in range(rowsA):

for j in range(colsB):

C[i][j] = A[i][j] - B[i][j]

print("Subtracted Array")

for i in range(rowsA):

row = '|'

for b in range(colsA):

row = row + ' ' + str(C[i][b])

print(row + ' ' + '|')

# write a program to multiply two matrix

rowsA = len(A)

colsA = len(A[0])

rowsB = len(B)

colsB = len(B[0])

if colsA != rowsB:

raise ArithmeticError('Number of A columns must equal number of B rows.')

C = []

while len(C) < rowsA:

C.append([])

while len(C[-1]) < colsB:

C[-1].append(0.0)

for i in range(rowsA):