As far as I know in unix it's a good practice to always have blank line at the end of file - or to put it in other words: every line should end with \n.
While checking my python code with PEP8 I noticed that it also states that there should be \n at end of file:
W292 no newline at end of file
JCR: The last line should have a newline.
What's strange, it conflicts with W391:
W391 blank line at end of file
JCR: Trailing blank lines are superfluous.
Okay: spam(1)
W391: spam(1)\n
How it should be? Should I have blank line at the end of file or not?
W391 is a blank line, that is, two consecutive \ns. There is no conflict.