python - Regular Expression to match cross platform newline characters

Question

My program can accept data that has newline characters of , or (eg Unix, PC or Mac styles)

What is the best way to construct a regular expression that will match whatever the encoding is?

Alternatively, I could use universal_newline support on input, but now I'm interested to see what the regex would be.

Answer 1

The regex I use when I want to be precise is " ?| ".

When I'm not concerned about consistency or empty lines, I use "[ ]+", I imagine it makes my programs somewhere in the order of 0.2% faster.