Python双层for循环

• 2020 年 1 月 9 日
• 筆記

matrix0 = [[1, 2], [3, 3], [2, 1]]  print 'matrix0:', matrix0    matrix1 = [[1 for i in range(2)] for i in range(3)]  print 'matrix1:', matrix1    matrix2 = [[0 for i in range(2)] for i in range(3)]  print 'matrix2:', matrix2    for i in range(3):      for j in range(2):          matrix2[i][j] = matrix0[i][j] + matrix1[i][j]    print 'matrix2:', matrix2    print('Good bye')

运行结果：

matrix0: [[1, 2], [3, 3], [2, 1]]  matrix1: [[1, 1], [1, 1], [1, 1]]  matrix2: [[0, 0], [0, 0], [0, 0]]  matrix2: [[2, 3], [4, 4], [3, 2]]  Good bye