string to file parameter oddity

[sparkz_alot]

Works for me.

Output:
C:\temp\test.txt
this is a test file

You could also write the line

f=r"C:\temp\test.txt"

as

f="C:/temp/test.txt"

Do you have a file named "test.txt" in "C:\temp" ?

In the future, please place code between the code (python) tags and the full traceback between the error tags.