A physical line is a sequence of characters terminated by an end-of-line
sequence. In source files, any of the standard platform line
termination sequences can be used - the Unix form using ASCII LF
(linefeed), the Windows form using the ASCII sequence CR LF (return
followed by linefeed), or the Macintosh form using the ASCII CR
(return) character. All of these forms can be used equally, regardless
of platform.
When embedding Python, source code strings should be passed to Python
APIs using the standard C conventions for newline characters (the
\n character, representing ASCII LF, is the line
terminator).
