random function with strings

Tim Peters tim.one at comcast.net
Sun Jun 22 05:00:51 CEST 2003


[messageboardfan1 at yahoo.com]
> I have a function that goes through a directory and I would like to
> remove randomly one of the files contained in that directory. I
> checked out the random() function in the documentation but it only
> deals with integers.

random.choice(seq) returns an element from the its sequence argument.

> here's what my function looks like:
>
> with os.path.walk
> def delete_backups(arg, dirname, names):
>  /*here I need a function that select a file randomly and, let's
> call it "name", then I do this:*/
>             os.remove(os.path.join(dirname, name))
>
> any suggestions?

Do

    random.choice(names)

to pick a name at random.  Note that this will fail if names is empty, and
won't do what you hope for if the name returned happens to be the name of a
contained directory.






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