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PyCharm 5 complains of a missing newline at the end of the file:
How do I tell PyCharm to add the newline (if missing) automatically whenever I save a file?
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For PyCharm 2018.3 on Windows: File -> Settings ( Ctrl + Alt + S ), then Editor -> Code Style : To follow PEP-8 set Hard wrap at to 80.
It's called a visual guide (Settings - Editor - Code Style). It helps you to see how wide is each line of code, and to keep the lines within this limit. You can configure the IDE to wrap the lines automatically when the lines are too long.
So, it turns out that, according to POSIX, every text file (including Ruby and JavaScript source files) should end with a \n , or “newline” (not “a new line”) character. This acts as the eol , or the “end of line” character.
To have PyCharm automatically insert a space at a location, select the checkbox next to this location in the list. The results are displayed in the preview pane.
This can be enabled in the Editor > General settings:
From the File menu open the Settings and select Editor > General. Under the Other section in the right-hand pane, check the Ensure an empty line at the end of a file on Save setting.
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