Tệp CSV mẫu cho Python
csvwriter.writerow(fields)6 csvwriter.writerow(fields)7 csvwriter.writerows(rows)4 csvwriter.writerows(rows)5 csvwriter.writerows(rows)6 csvwriter.writerows(rows)7 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)7 csvwriter.writerows(rows)9 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)9 with open(filename, 'w') as csvfile: writer = csv.DictWriter(csvfile, fieldnames = fields)1 Show
with open(filename, 'w') as csvfile: writer = csv.DictWriter(csvfile, fieldnames = fields)2 csvwriter.writerow(fields)6 csvwriter.writerow(fields)7____95 with open(filename, 'w') as csvfile: writer = csv.DictWriter(csvfile, fieldnames = fields)6 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)7 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)8 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)9 csvwriter.writerow(fields)80 csvwriter.writerow(fields)81 csvwriter.writerow(fields)82 csvwriter.writerows(rows)10 csvwriter.writerow(fields)84 csvwriter.writerows(rows)10 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)7 csvwriter.writerow(fields)87 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)9 csvwriter.writerow(fields)89 csvwriter.writerow(fields)1 csvwriter.writerow(fields)6______07 csvwriter.writerows(rows)13 csvwriter.writerow(fields)9 csvwriter.writerows(rows)15 csvwriter.writerows(rows)45 csvwriter.writerows(rows)17 csvwriter.writerows(rows)18 csvwriter.writerows(rows)10 csvwriter.writerow(fields)6____07 csvwriter.writerows(rows)402 with open(filename, 'w') as csvfile: writer = csv.DictWriter(csvfile, fieldnames = fields)6 đầu ra
Ví dụ trên sử dụng tệp CSV aapl. csv có thể tải xuống từ đây. Chạy chương trình này với aapl. csv trong cùng thư mục
csvwriter.writerows(rows)2
csvwriter.writerows(rows)4
csvwriter.writerows(rows)4
csvwriter.writerows(rows)1
ví dụ 2. Ghi vào tệp CSVcon trăncsvwriter.writerows(rows)404 csvwriter.writerows(rows)41 csvwriter.writerows(rows)42
csvwriter.writerows(rows)407 csvwriter.writerows(rows)48 csvwriter.writerows(rows)45 csvwriter.writerows(rows)410 csvwriter.writerows(rows)411 csvwriter.writerows(rows)412 csvwriter.writerows(rows)413 csvwriter.writerows(rows)412 csvwriter.writerows(rows)415 csvwriter.writerows(rows)412 csvwriter.writerows(rows)417 csvwriter.writerows(rows)418
csvwriter.writerows(rows)419 csvwriter.writerows(rows)41 csvwriter.writerows(rows)45 csvwriter.writerows(rows)422 csvwriter.writerows(rows)423 csvwriter.writerows(rows)412 csvwriter.writerows(rows)425 csvwriter.writerows(rows)412 csvwriter.writerows(rows)427 csvwriter.writerows(rows)412 csvwriter.writerows(rows)429 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)433 csvwriter.writerows(rows)412 csvwriter.writerows(rows)425 csvwriter.writerows(rows)412 csvwriter.writerows(rows)427 csvwriter.writerows(rows)412 csvwriter.writerows(rows)439 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)443 csvwriter.writerows(rows)412 csvwriter.writerows(rows)445 csvwriter.writerows(rows)412 csvwriter.writerows(rows)427 csvwriter.writerows(rows)412 csvwriter.writerows(rows)449 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)453 csvwriter.writerows(rows)412 csvwriter.writerows(rows)455 csvwriter.writerows(rows)412 csvwriter.writerows(rows)457 csvwriter.writerows(rows)412 csvwriter.writerows(rows)459 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)463 csvwriter.writerows(rows)412 csvwriter.writerows(rows)465 csvwriter.writerows(rows)412 csvwriter.writerows(rows)467 csvwriter.writerows(rows)412 csvwriter.writerows(rows)469 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)473 csvwriter.writerows(rows)412 csvwriter.writerows(rows)475 csvwriter.writerows(rows)412 csvwriter.writerows(rows)427 csvwriter.writerows(rows)412 csvwriter.writerows(rows)439 csvwriter.writerows(rows)480
csvwriter.writerows(rows)481 csvwriter.writerows(rows)44 csvwriter.writerows(rows)45 csvwriter.writerows(rows)484
csvwriter.writerows(rows)485 csvwriter.writerows(rows)45 csvwriter.writerows(rows)46 csvwriter.writerows(rows)47 csvwriter.writerows(rows)489 csvwriter.writerows(rows)49 csvwriter.writerows(rows)10____3492 csvwriter.writerows(rows)10 csvwriter.writerows(rows)494 csvwriter.writerows(rows)45 csvwriter.writerows(rows)496 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10 csvwriter.writerows(rows)499 csvwriter.writerows(rows)10____4401 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10____4404 csvwriter.writerows(rows)10____4406 Hãy để chúng tôi cố gắng hiểu đoạn mã trên.
with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)
csvwriter.writerow(fields)
csvwriter.writerows(rows)
ví dụ 3. Viết từ điển vào tệp CSVcon trăncsvwriter.writerows(rows)404 csvwriter.writerows(rows)41 csvwriter.writerows(rows)42
csvwriter.writerows(rows)410 csvwriter.writerows(rows)411 csvwriter.writerows(rows)45 csvwriter.writerows(rows)413 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)425 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)429 csvwriter.writerows(rows)412 csvwriter.writerows(rows)422 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)423 csvwriter.writerows(rows)412____4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)427 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____4432 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)425 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)439 csvwriter.writerows(rows)412 csvwriter.writerows(rows)441 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)433 csvwriter.writerows(rows)412____4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)427 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)432 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)445 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)449 csvwriter.writerows(rows)412 csvwriter.writerows(rows)441 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)443 csvwriter.writerows(rows)412______4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)427 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____4432 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)455 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)459 csvwriter.writerows(rows)412 csvwriter.writerows(rows)441 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)453 csvwriter.writerows(rows)412____4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)457 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____4432 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)465 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)469 csvwriter.writerows(rows)412 csvwriter.writerows(rows)441 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)463 csvwriter.writerows(rows)412____4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)467 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)432 csvwriter.writerows(rows)414 csvwriter.writerows(rows)415 csvwriter.writerows(rows)475 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)415 csvwriter.writerows(rows)439 csvwriter.writerows(rows)412 csvwriter.writerows(rows)441 csvwriter.writerows(rows)423 csvwriter.writerows(rows)415 csvwriter.writerows(rows)473 csvwriter.writerows(rows)412____4427 csvwriter.writerows(rows)415 csvwriter.writerows(rows)427 csvwriter.writerows(rows)125
csvwriter.writerows(rows)407 csvwriter.writerows(rows)48 csvwriter.writerows(rows)45 csvwriter.writerows(rows)410 csvwriter.writerows(rows)423 csvwriter.writerows(rows)412 csvwriter.writerows(rows)414 csvwriter.writerows(rows)412 csvwriter.writerows(rows)427 csvwriter.writerows(rows)412 csvwriter.writerows(rows)418 csvwriter.writerows(rows)418
csvwriter.writerows(rows)481 csvwriter.writerows(rows)44 csvwriter.writerows(rows)45 csvwriter.writerows(rows)484
csvwriter.writerows(rows)485 csvwriter.writerows(rows)45 csvwriter.writerows(rows)46 csvwriter.writerows(rows)47 csvwriter.writerows(rows)489 csvwriter.writerows(rows)49 csvwriter.writerows(rows)10____2149 csvwriter.writerows(rows)10 csvwriter.writerows(rows)151____345 csvwriter.writerows(rows)153 csvwriter.writerows(rows)45 csvwriter.writerows(rows)155 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10 csvwriter.writerows(rows)158 csvwriter.writerows(rows)10 csvwriter.writerows(rows)160 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10 csvwriter.writerows(rows)163 csvwriter.writerows(rows)10 csvwriter.writerows(rows)165 Trong ví dụ này, chúng tôi viết từ điển mydict vào tệp CSV. with open(filename, 'w') as csvfile: writer = csv.DictWriter(csvfile, fieldnames = fields)
csvwriter.writerow(fields)8
csvwriter.writerows(rows)1
Vì vậy, cuối cùng, tệp CSV của chúng tôi trông như thế này. tệp csv Hãy xem xét rằng tệp CSV trông như thế này ở dạng văn bản thuần túy. hồ sơ đại học
Ví dụ 4. Cách lưu trữ email trong tệp CSV?Python3csvwriter.writerows(rows)404 csvwriter.writerows(rows)41 csvwriter.writerows(rows)42
csvwriter.writerows(rows)407 csvwriter.writerows(rows)48 csvwriter.writerows(rows)45 csvwriter.writerows(rows)410 csvwriter.writerows(rows)411 csvwriter.writerows(rows)412 csvwriter.writerows(rows)175 csvwriter.writerows(rows)418
csvwriter.writerows(rows)419 csvwriter.writerows(rows)41 csvwriter.writerows(rows)45 csvwriter.writerows(rows)422 csvwriter.writerows(rows)423 csvwriter.writerows(rows)412 csvwriter.writerows(rows)183 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____3410 csvwriter.writerows(rows)433____3412 csvwriter.writerows(rows)189 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____3410 csvwriter.writerows(rows)443____3412 csvwriter.writerows(rows)195 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1____3410 csvwriter.writerows(rows)453 csvwriter.writerows(rows)412 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)01 csvwriter.writerows(rows)430 csvwriter.writerow(fields)1 csvwriter.writerows(rows)410 csvwriter.writerows(rows)463____3412 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)07 csvwriter.writerows(rows)430 _______ 01____3410____3473____3412 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)13 csvwriter.writerows(rows)480
csvwriter.writerows(rows)481 csvwriter.writerows(rows)44 csvwriter.writerows(rows)45 with open(filename, 'w') as csvfile: csvwriter = csv.writer(csvfile)18
csvwriter.writerows(rows)485 csvwriter.writerows(rows)45 csvwriter.writerows(rows)46 csvwriter.writerows(rows)47 csvwriter.writerows(rows)489 csvwriter.writerows(rows)49 csvwriter.writerows(rows)10____3492 csvwriter.writerows(rows)10 csvwriter.writerows(rows)494 csvwriter.writerows(rows)45 csvwriter.writerows(rows)496 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10 csvwriter.writerows(rows)499 csvwriter.writerows(rows)10____4401 csvwriter.writerows(rows)10 csvwriter.writerows(rows)10____4404 csvwriter.writerows(rows)10____4406 đầu ra Email trong csv Giải trình Ở đây chúng tôi đang nhập mô-đun csv và sau đó chỉ cần sử dụng cùng một khái niệm lưu trữ email ở dạng thực thể được phân tách bằng dấu phẩy cùng với tên của chúng. Chúng tôi đang mở hàm open() của tệp và chỉ định rằng chúng tôi cần tệp đó dưới dạng tệp csv, sau đó ghi từng cột vào tệp csv bằng cách sử dụng đối tượng nhà văn Ví dụ về tệp CSV là gì?Tệp CSV là danh sách dữ liệu được phân tách bằng dấu phẩy. Ví dụ, nó có thể trông giống như sau. Tên, email, số điện thoại, địa chỉ . Ví dụ,ví dụ@ví dụ. com,555-555-5555,Địa chỉ ví dụ .
Tệp CSV nào được sử dụng trong Python?Sử dụng thư viện Pandas để xử lý tệp CSV
. Nếu chúng tôi đang làm việc với khối dữ liệu khổng lồ, tốt hơn hết là sử dụng gấu trúc để xử lý các tệp CSV để dễ dàng và hiệu quả.
CÁCH bao gồm tệp CSV trong Python?Các bước để nhập tệp CSV vào Python bằng Pandas . Bước 1. Chụp đường dẫn tệp. Đầu tiên, nắm bắt đường dẫn đầy đủ nơi tệp CSV của bạn được lưu trữ. . Bước 2. Áp dụng mã Python. . Bước 3. Chạy mã. . Bước tùy chọn. Chọn tập hợp con của các cột Ví dụ về cách đọc và ghi tệp CSV bằng Python?Các bước để đọc tệp CSV. . Nhập thư viện csv. nhập csv Mở tệp CSV. Các. Phương thức open() trong python được sử dụng để mở tệp và trả về một đối tượng tệp. . Sử dụng tệp csv. đối tượng reader để đọc tệp CSV. csvreader = csv. người đọc (tập tin) Trích xuất tên trường. . Trích xuất các hàng/bản ghi. . Đóng tệp |