[Python-ideas] os.path.isparent and os.path.ischild

[Steven D'Aprano]

Giampaolo Rodolà wrote:
>>>> isparent('/a', '/a/b')
> True


I'm not sure that this is so common and useful that it needs to be 
included in os.path. You can always just add it to your own library, or 
even write them in-line: the implementation is just a one-liner.

def isparent(path1, path2):
     "Returns True if path1 is a parent of path2."
     return os.path.commonprefix([path1, path2]) == path1

def ischild(path1, path2):
     "Returns True if path1 is a child of path2."
     return os.path.commonprefix([path1, path2]) == path2



-- 
Steven