python standard library: urllib.parse

parse_qs / urlparse

from urllib.parse import parse_qs
from urllib.parse import urlparse

url = 'https://server.tld/path/to/resource;par?value-one=foo&value-two=bar&value-two=baz#xyz'

parsed = urlparse(url)

print(f'scheme:   {parsed.scheme  }') # https
print(f'netloc:   {parsed.netloc  }') # server.tld
print(f'path:     {parsed.path    }') # /path/to/resource
print(f'params:   {parsed.params  }') # par
print(f'query:    {parsed.query   }') # value-one=foo&value-two=bar&value-two=baz
print(f'fragment: {parsed.fragment}') # xyz
print('')

values = parse_qs(parsed.query)
print(values['value-one']) # ['foo']
print(values['value-two']) # ['bar', 'baz']

print(values.get('unobtainium', ['n/a'])[0]) # n/a

urljoin

import urllib.parse

print(urllib.parse.urljoin('https://tld.xy/path/to/xyz.html', '/abc.html'                             ))  # https://tld.xy/abc.html
print(urllib.parse.urljoin('https://tld.xy/path/to/xyz.html', 'abc.html'                              ))  # https://tld.xy/path/to/abc.html
print(urllib.parse.urljoin('https://tld.xy/path/to/xyz.html', '../abc.html'                           ))  # https://tld.xy/path/abc.html
print(urllib.parse.urljoin('https://tld.xy/path/to/xyz.html', 'https://another.tld.xy/foo/bar/baz.hml'))  # https://another.tld.xy/foo/bar/baz.hml
print(urllib.parse.urljoin('one/two/three.html'             , 'four/five.html'                        ))  # one/two/four/five.html

See also