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- # Матрицы
- m = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
- for line in m:
- print(line)
- print('\n')
- # Обращение к элементам
- print(m[0][1])
- print("\n")
- # Работа в цикле
- #Когда индекс не нужен
- for line in m:
- for el in line:
- print(el)
- print()
- for i in range(len(m)):
- for j in range(len(m[i])):
- m[i][j] = 5
- print(m)
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