Python - Matrix Addition/Subtraction

matrix-operations.py

def createMatrix():
  _matrix = []
 
  ms=int(input("Enter no. of matrices to create: "))
 
  for i in range(ms):
    print("\nMatrix %i"%(i+1))
    r=int(input("\tEnter no. of rows: "))
    c=int(input("\tEnter no. of columns: "))
 
    m=[]
    b=[]
 
    for i in range(r):
      for j in range(c):
        v= int(input("\tEnter value for row "+str(i)+" column "+str(j)+": "))
        b.append(v)
      m.append(b)
      b=[]
   
    _matrix.append(m)
 
  return _matrix
 
matrix = createMatrix()
 
# Sample 2 Matrices assigning to m1 & m2
m1 = matrix[0]
m2 = matrix[1]

c=[]

for i in range(len(m1)):
  if (len(m1) != len(m2)) or (len(m1[i]) != len(m2[i])):
    print("Not possible")
    break

  for j in range(len(m1[i])):
    c.append(m1[i][j]+m2[i][j])

print(c)