Interpreter fussy about line endings?

[Greg Ewing]

Python 1.5.1 on my Mac refuses to run code
written using PythonWin's built-in editor,
apparently because of different CR/LF 
conventions. I have to load it into Alpha
and save it in Mac format before it will
work!

Is it meant to be like this? Why should
it care? How is one supposed to write
cross-platform Python code if it does
things like this?

Bewilderedly,
Greg