{"id":1494,"date":"2023-01-04T20:00:00","date_gmt":"2023-01-04T11:00:00","guid":{"rendered":"https:\/\/python-academia.com\/en\/?p=1494"},"modified":"2023-10-15T07:07:46","modified_gmt":"2023-10-14T22:07:46","slug":"list-transpose","status":"publish","type":"post","link":"https:\/\/python-academia.com\/en\/list-transpose\/","title":{"rendered":"[Python] How to Transpose List [convert rows to columns]"},"content":{"rendered":"\n

This article shows how to transpose list.<\/span><\/p>\n\n\n\n

<\/i>Contents<\/span><\/p>

\n

<\/p>\n\n\n\n

    \n
  • [Appendix] How to display a two-dimensional array<\/li>\n\n\n\n
  • Transpose a two-dimensional array by “for loop”.<\/li>\n\n\n\n
  • Transpose a two-dimensional array by “numpy”<\/li>\n<\/ul>\n\n\n\n

    <\/p>\n<\/div><\/div>\n\n\n\n

    <\/div>\n\n\n\n

    How to display a two-dimensional array<\/h2>\n\n\n\n

    In the beginning, I show how to display a two-dimensional array<\/span>.<\/p>\n\n\n\n

    Displaying a two-dimensional array as a matrix makes it easier to visualize transposition.<\/p>\n\n\n\n

    <\/div>\n\n\n\n

    If you try to display two-dimensional array by print( ) function , it is not displayed like a matrix.<\/p>\n\n\n\n

    matrix = [\n[11, 12, 13, 14],\n[21, 22, 23, 24],\n[31, 32, 33, 34],\n]\n\nprint(matrix)\n# [[11, 12, 13, 14], [21, 22, 23, 24], [31, 32, 33, 34]]<\/code><\/pre>\n\n\n\n
    <\/div>\n\n\n\n
    This makes it difficult to imagine transposition.<\/p>\n\n\n\n
    <\/div>\n\n\n\n
    I show two ways to display a two-dimensional array as a matrix.<\/p>\n\n\n\n
    <\/div>\n\n\n\n
    How to display a two-dimensional array as a matrix by using “for loop”<\/h3>\n\n\n\n
    I show how to display a two-dimensional array as a matrix by using “for loop”<\/span>.<\/p>\n\n\n\n
    matrix = [\n[11, 12, 13, 14],\n[21, 22, 23, 24],\n[31, 32, 33, 34],\n]\n\nfor i in range(len(matrix)):\n    print(matrix[i])\n\"\"\"\n[11, 12, 13, 14]\n[21, 22, 23, 24]\n[31, 32, 33, 34]\n\"\"\"<\/code><\/pre>\n\n\n\n
    <\/div>\n\n\n\n
    How to display a two-dimensional array as a matrix by using “Unpacking” and delimiter “\\n”<\/h3>\n\n\n\n
    You can unpack the elements by appending ” * ” to list.<\/p>\n\n\n\n
    Unpacking list elements allows them to be separated by a delimiter when they are displayed by using print( ) function.<\/p>\n\n\n\n
    By specifying “\\n” as the delimiter, a two-dimensional array can be displayed as a matrix.<\/p>\n\n\n\n
    matrix = [\n[11, 12, 13, 14],\n[21, 22, 23, 24],\n[31, 32, 33, 34],\n]\n\nprint(*matrix, sep='\\n')\n\"\"\"\n[11, 12, 13, 14]\n[21, 22, 23, 24]\n[31, 32, 33, 34]\n\"\"\"<\/code><\/pre>\n\n\n\n
    <\/div>\n\n\n\n
    sponsored link<\/p>\n\n\n\n\n
    \n