No newline at end of file python как исправить

I’m having trouble understanding what «No newline at end of file» means exactly.

The error is pointing to the last line

Can someone help explain to me why I’m getting this invalid error and offer a solution to solve it. Thanks

1 Answer 1

It means exactly what it says. There is no recognizable newline at the end of the file. The last character is the ) . or maybe a TAB , or SPACE , or a line terminator for a different platform.

Solution: open the file in an editor, add a newline at the end, save and close the file.

I’ve tried that, I had a new line after it and I get «blank line contains whitespace» error.

So what you had was a line consisting of white space (SPACE or TAB characters) followed by a newline. Use your editor to get rid of that line.

The style checker wants the last line of the file to end with the newline character, and to have no trailing whitespace on that line.

GitHub

нулевой символ ( x00 , \0 ) — часто используется для кодирования конца строки в памяти; т.е. программа считывает символы из памяти по одному до тех пор, пока не встретит нулевой символ, и тогда строка считается завершённой;
табуляция ( \x09 , \t ) — используется для выравнивания данных по границе столбца, так что это выглядит как таблица;
перевод строки ( \x0a , \n ) — используется для разделения текстовых данных на отдельные строки;
возврат каретки ( \x0d , \r ) — переместить курсор в начало строки;
возврат на один символ ( \x08 , \b ) — переместить курсор на один символ назад;
звонок ( \x07 , \a ) — если набрать этот символ в терминале, то будет бибикающий символ; именно так консольные программы, типа vim , бибикают на пользователей; .

в Unix-совместимых системах (включая современные версии macOS) используется один символ перевода строки ( LF );
в Windows используется сразу два символа — возврат каретки ( CR ) и перевод строки ( LF );
в очень старых версиях Mac OS (до 2001 года) использовался один символ CR .

при дозаписи содержимого в конец файла без переноса строки получится некрасивый дифф — будет изменена последняя строка (хотя на ней всего лишь добавился символ переноса);
файл с переносом строки и без переноса строки — это два разных файла; для diff и git diff единственный способ отобразить разницу между ними — это напечатать сообщение об отсутствии символа переноса строки;
согласно стандарту языка C (до 2014 года), непустые файлы с исходным кодом должны заканчиваться символом переноса строки.

PyCharm и другие IDE JetBrains: Settings > Editor > General > Ensure an empty line at the end of a file on Save ;
VS Code: «files.insertFinalNewline»: true .

W391 blank line at end of file introduces —> W292 no newline at end of file #365

The text was updated successfully, but these errors were encountered:

IanLee1521 commented Jan 3, 2015

Could you provide some sample code where this is an issue? Thanks.

jkterry1 commented Mar 15, 2018

Hey, I seem to be having this issue as well, with this sample code:

FichteFoll commented Mar 15, 2018 •

Since this error is highly whitespace-sensitive, I don’t think it can be reproduced with simple code blocks as those are stripped. Please upload files.

That said, I suspect that the initial problem was that the end of the file looked as follows:

Note that the last line here is not empty but has 4 spaces. This should raise W391. It was then attempted to fix the error by removing the last newline, but that left the four spaces in the now last line, which caused W292 to be raised.

hoylemd commented Mar 16, 2018 •

As a workaround in the meantime, I have a bit in my editor(vim) config(.vimrc) that strips trailing whitespace whenever a buffer is saved. That might help you (@justinkterry) in the short term, if you use vim and are ok with your editor cleaning whitespace up for you:

or more concisely:

bsmoliak commented Jan 4, 2019

W391 appears to supercede W292.

Seems like W292 should be raised first.

codypiersall commented Jan 16, 2019

Hmmm, for what it’s worth, it seems like Vim inserts the newline at the end of the file, but it doesn’t look like there is a newline. I wonder if this is what was happening with the OP?

It took me quite a while to believe that I actually deserved to get W391, but when I hexdump -C /the/file | tail , it was true! The last two bytes were 0a 0a .

PEP8 "No newline at end of file"

I’m having trouble understanding what "No newline at end of file" means exactly.

The error is pointing to the last line

Can someone help explain to me why I’m getting this invalid error and offer a solution to solve it. Thanks

1 Answer 1

It means exactly what it says. There is no recognizable newline at the end of the file. The last character is the ) . or maybe a TAB , or SPACE , or a line terminator for a different platform.

Solution: open the file in an editor, add a newline at the end, save and close the file.

I’ve tried that, I had a new line after it and I get "blank line contains whitespace" error.

So what you had was a line consisting of white space (SPACE or TAB characters) followed by a newline. Use your editor to get rid of that line.

The style checker wants the last line of the file to end with the newline character, and to have no trailing whitespace on that line.

W292 no newline at the end of file – how to fix

This is PEP8 error if you do not add an empty line to the end of your file.

Introduction excercise coded in Python 3. Pay attention to line 21.

Add an empty line to the end of your .py file (like in the picture line 21). Without any indent. This is it!

2 thoughts on “W292 no newline at the end of file – how to fix”

I think you meant “indent” not intent

You are correct! Thank you ��

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