creating a file from python

[gollem]

I want to create a file from inside a running python script.
I can do that using commands and touch but it won't work if the intended
name of the file is the value of a python variable. The file is created as
the variable name instead of the variable value.
I think I need to use a shell (bash) variable to do it but then the question
becomes how do I create that? thnx