Python string.strip() optional arguments not implemented

Python

foo = 'foocba'
print(foo.strip('abc'))

foo Generated javascript prints foocba

[Michael-F-Ellis]

The following works for my immediate problem but it makes my skin crawl a little.

                while a.startswith('-'):
                    a = a[1:]
                while a.endswith('-'):
                    a = a[:-1]

[Michael-F-Ellis]

@fzzylogic Good point! I think there are a couple of meta-issues here so I’m going to submit those separately to promote wider discussion.