Wayback redirects without scheme + domain don’t work

[Mr0grog]

New bug in v0.3.0a1:

Some Wayback redirects use a Location: header with a scheme and domain, e.g:

Location: http://web.archive.org/web/20201027215555id_/https://www.whitehouse.gov/administration/eop/ostp/about/student/faqs

But others don’t, e.g:

Location: /web/20201027215555id_/https://www.whitehouse.gov/ostp/about/student/faqs

The latter will cause Wayback v0.3.0a1 to fail when trying to parse the headers:

>>> import wayback
>>> c = wayback.WaybackClient()
>>> c.get_memento('http://web.archive.org/web/20201027215555id_/https://www.whitehouse.gov/administration/eop/ostp/about/student/faqs')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/rbrackett/Dev/datarescue/wayback/wayback/_client.py", line 724, in get_memento
    headers=Memento.parse_memento_headers(response.headers),
  File "/Users/rbrackett/Dev/datarescue/wayback/wayback/_models.py", line 285, in parse_memento_headers
    headers['Location'], _, _ = memento_url_data(raw_headers['Location'])
  File "/Users/rbrackett/Dev/datarescue/wayback/wayback/_utils.py", line 122, in memento_url_data
    raise ValueError(f'"{memento_url}" is not a memento URL')
ValueError: "/web/20201027215555id_/https://www.whitehouse.gov/ostp/about/student/faqs" is not a memento URL