Resolución de una ruta de URL relativa a su ruta absoluta

Question

¿Hay una biblioteca en python que funcione así?

>>> resolvePath("http://www.asite.com/folder/currentpage.html", "anotherpage.html") 
'http://www.asite.com/folder/anotherpage.html' 
>>> resolvePath("http://www.asite.com/folder/currentpage.html", "folder2/anotherpage.html") 
'http://www.asite.com/folder/folder2/anotherpage.html' 
>>> resolvePath("http://www.asite.com/folder/currentpage.html", "/folder3/anotherpage.html") 
'http://www.asite.com/folder3/anotherpage.html' 
>>> resolvePath("http://www.asite.com/folder/currentpage.html", "../finalpage.html") 
'http://www.asite.com/finalpage.html' 

Answer 1

Sí, hay urlparse.urljoin, o urllib.parse.urljoin para Python 3.

>>> try: from urlparse import urljoin # Python2 
... except ImportError: from urllib.parse import urljoin # Python3 
... 
>>> urljoin("http://www.asite.com/folder/currentpage.html", "anotherpage.html") 
'http://www.asite.com/folder/anotherpage.html' 
>>> urljoin("http://www.asite.com/folder/currentpage.html", "folder2/anotherpage.html") 
'http://www.asite.com/folder/folder2/anotherpage.html' 
>>> urljoin("http://www.asite.com/folder/currentpage.html", "/folder3/anotherpage.html") 
'http://www.asite.com/folder3/anotherpage.html' 
>>> urljoin("http://www.asite.com/folder/currentpage.html", "../finalpage.html") 
'http://www.asite.com/finalpage.html' 

para copiar y pegar:

try: 
    from urlparse import urljoin # Python2 
except ImportError: 
    from urllib.parse import urljoin # Python3