new_contents: def checkio(matrix):
      matrixLen = len(matrix)
      if matrixLen == 0:
          return []
      tMatrix = [[] for col in matrix[0]]
      for row in range(matrixLen):
          for col in range(len(matrix[row])):
              tMatrix[col].append(matrix[row][col])
      return tMatrix
  
subject: Create mySolution.py