Cách thêm tệp văn bản trong Python
Trong khi đọc hoặc ghi vào tệp, chế độ truy cập sẽ chi phối loại thao tác có thể thực hiện trong tệp đã mở. Nó đề cập đến cách tệp sẽ được sử dụng sau khi được mở. Các chế độ này cũng xác định vị trí của Xử lý tệp trong tệp. Định nghĩa của các chế độ truy cập này như sau Show
Khi tệp được mở ở chế độ nối thêm trong Python, tay cầm được đặt ở cuối tệp. Dữ liệu được ghi sẽ được chèn vào cuối, sau dữ liệu hiện có. ví dụ 1. Chương trình Python để minh họa chế độ Nối và ghiPython3Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow2 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow3 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow4 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Hello This is Delhi This is Paris This is London Today0 Hello This is Delhi This is Paris This is London Today1
Hello This is Delhi This is Paris This is London Today2 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8____49 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Hello This is Delhi This is Paris This is London Today9____460 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow61 _______462____463____00 Hello This is Delhi This is Paris This is London Today1
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow72 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9____476 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow79 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow81 Hello This is Delhi This is Paris This is London Today1
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow83 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow2 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow60 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow92 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow62____494 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Hello This is Delhi This is Paris This is London Today1
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow72 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9____507 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow79 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow81 Hello This is Delhi This is Paris This is London Today1 đầu ra Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 ví dụ 2. Nối dữ liệu từ một dòng mớiTrong ví dụ xử lý tệp ở trên, có thể thấy rằng dữ liệu không được thêm vào từ dòng mới. Điều này có thể được thực hiện bằng cách ghi ký tự '\n' xuống dòng vào tệp. Python3Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow14 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow15
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow2 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow3 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow4 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Hello This is Delhi This is Paris This is London Today0 Hello This is Delhi This is Paris This is London Today1
Hello This is Delhi This is Paris This is London Today2 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow61 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Hello This is Delhi This is Paris This is London Today9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow15 _______462____017____00 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow62____020 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow22 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow62____024 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow6 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow7 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow8 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow1 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow72 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow9____476 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow0 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow79 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow74 Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow81 Hello This is Delhi This is Paris This is London Today1 đầu ra Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow Ghi chú. '\ n' được coi là một ký tự đặc biệt gồm hai byte ví dụ 3. Sử dụng câu lệnh With trong Pythonvới câu lệnh được sử dụng trong xử lý ngoại lệ để làm cho mã sạch hơn và dễ đọc hơn nhiều. Nó đơn giản hóa việc quản lý các tài nguyên phổ biến như luồng tệp. Không giống như các triển khai ở trên, không cần gọi tệp. close() khi sử dụng với câu lệnh. Bản thân câu lệnh with đảm bảo việc thu thập và giải phóng tài nguyên phù hợp. |