Trong bài viết này, chúng ta sẽ tìm hiểu các cách sao chép danh sách khác nhau trong Python. Các cách sao chép danh sách khác nhau này có thời gian thực hiện khác nhau, vì vậy chúng tôi có thể so sánh chúng trên cơ sở thời gian.
Các cách khác nhau để sao chép danh sách
- Sử dụng kỹ thuật cắt lát
- Sử dụng phương thức mở rộng[]
- Sao chép danh sách bằng =[toán tử gán]
- Sử dụng phương pháp Sao chép nông
- Sử dụng hiểu danh sách
- Sử dụng phương thức append[]
- Sử dụng phương thức copy[]
- Sử dụng phương pháp Deep Copy
- Sử dụng phương pháp bản đồ
- Sử dụng hàm slice[]
1. Sử dụng kỹ thuật cắt lát
Đây là cách dễ nhất và nhanh nhất để sao chép danh sách. Phương pháp này được xem xét khi chúng tôi muốn sửa đổi danh sách và cũng giữ một bản sao của bản gốc. Trong phần này, chúng tôi tạo một bản sao của chính danh sách đó, cùng với tài liệu tham khảo. Quá trình này còn được gọi là nhân bản. Kỹ thuật này mất khoảng 0. 039 giây và là kỹ thuật nhanh nhất.
Để biết thêm thông tin, bạn có thể đọc bài viết này – List Slicing Technique
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
đầu ra.
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
2. Sử dụng phương thức mở rộng[]
Các danh sách có thể được sao chép vào một danh sách mới bằng cách sử dụng chức năng mở rộng[]. Điều này nối thêm từng phần tử của đối tượng có thể lặp lại [e. g. , một danh sách khác] vào cuối danh sách mới. Điều này mất khoảng 0. 053 giây để hoàn thành.
Để biết thêm thông tin, bạn có thể đọc bài viết này –extend[]
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Đầu ra
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]
3. Sao chép danh sách bằng =[toán tử gán]
Đây là phương pháp sao chép danh sách đơn giản nhất bằng cách sử dụng toán tử =. Toán tử này gán danh sách cũ cho danh sách mới bằng Python = toán tử.
Ở đây chúng tôi sẽ tạo một danh sách và sau đó chúng tôi sẽ sao chép danh sách cũ vào danh sách mới bằng cách sử dụng các toán tử gán
Ghi chú. Có một vấn đề với phương pháp này nếu bạn sửa đổi trong danh sách mới thì danh sách cũ cũng được sửa đổi do danh sách mới đang tham chiếu
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]10
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
đầu ra.
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]
4. Sử dụng phương pháp Sao chép nông
Phương pháp sao chép này sử dụng bản sao. Bản sao nông được giải thích kỹ trong bài viết Bản sao nông. Điều này mất khoảng 0. 186 giây để hoàn thành.
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]28
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]29
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]30
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]32
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]36
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]39
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]40
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]42
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]43
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]47
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]50
_______01____052
đầu ra
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
5. Sử dụng hiểu danh sách
Phương pháp hiểu danh sách có thể được sử dụng để sao chép tất cả các phần tử riêng lẻ từ danh sách này sang danh sách khác. Điều này mất khoảng 0. 217 giây để hoàn thành.
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]54
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]60
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]61
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]62
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]63
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]64
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
đầu ra.
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]
6. Sử dụng phương thức append[]
Điều này có thể được sử dụng để nối thêm và thêm các phần tử vào danh sách hoặc sao chép chúng vào danh sách mới. Nó được sử dụng để thêm phần tử vào vị trí cuối cùng của danh sách. Điều này mất khoảng 0. 325 giây để hoàn thành và là phương pháp nhân bản chậm nhất.
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]61
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]06______063
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]08
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
đầu ra.
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]
7. Sử dụng phương thức copy[]
Bản sao Danh sách Python[] là một bản sao phương thức sẵn có được sử dụng để sao chép tất cả các phần tử từ danh sách này sang danh sách khác. Điều này mất khoảng 1. 488 giây để hoàn thành
Ví dụ.
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]41
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]51
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]98
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]0
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____03
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]4
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]2____07
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
đầu ra.
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]
8. Sử dụng phương pháp Deep Copy
Phương pháp sao chép này được giải thích cặn kẽ trong bài viết Deep Copy. Điều này mất khoảng 10. 59 giây để hoàn thành và là phương pháp nhân bản chậm nhất.
Ví dụ
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]28
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]29
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]30
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]00
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]32
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]36
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]39
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]40
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]42
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]43
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]6
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]901
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]902
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]904
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]1____1906
đầu ra
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
9. Sử dụng hàm liệt kê
Python3
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]9
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]54
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]909
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]5_______06
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]8
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]90
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]92
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]94
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]7
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]96
Original List: [4, 8, 2, 10, 15, 18] After Cloning: [4, 8, 2, 10, 15, 18]97
Làm cách nào để tạo một bản sao của danh sách mà không thay đổi danh sách gốc Python?
Phương thức Python copy[] sao chép danh sách và trả về danh sách đã sao chép. Nó không nhận bất kỳ tham số nào và trả về một bản sao nông của danh sách. Bản sao nông là bản không hiển thị bất kỳ sửa đổi nào trong danh sách gốc.
Bạn có thể sao chép toàn bộ thành phần danh sách vào danh sách mới trong Python không?
sử dụng cắt lát
. Phương pháp này được gọi là nhân bản. Danh sách ban đầu sẽ không thay đổi. Trong phương pháp này, cắt lát được sử dụng để sao chép từng phần tử của danh sách gốc vào danh sách mới