BaseHandler.close

>>> import urllib.request
>>> f = urllib.request.urlopen('https://www.python.org/')
>>> try:
...     enc = f.headers.get('Content-Encoding')
...     data = f.read()
...     if enc == 'gzip':
...         import gzip
...         data = gzip.decompress(data)
...     print(data[:100].decode('utf-8', errors='replace'))
... finally:
...     f.close()