Matching multiple parts in string

[bowlofred]

1 Astring and Bstring aren't strings, they're lists. Is there a reason you have the brackets around them? Does the findall() call generate an error about passing in an unhashable type?
2 The re module uses regular expressions, not globs. The initial * in Bstring isn't legal and the dots will match anything.
3 re.findall takes a pattern and a string to match. You're passing them in backward.

Changing those things:

>>> a = '123.456.789.10.11.12.abc'
>>> b = '.*.456.789.*.11.12.*'
>>> re.findall(b,a)
['123.456.789.10.11.12.abc']