Martin Panter added the comment:
I also liked the idea of returning None to distinguish a missing URL component
from an empty-but-present component, and it would make them more consistent
with the “username” and “password” fields. But I agree it would break backwards
compabitility too much. The idea of “has_fragment” etc flags might work. The
ParseResult etc class signatures could be expanded like this:
SplitResult(scheme, netloc, path, query, fragment, *, has_netloc=None,
has_query=None, has_fragment=None)
>>> url1 = SplitResult("http", "localhost", "/path", query="", fragment="")
>>> url1.has_netloc
True
>>> url1.has_fragment
False
>>> url2 = SplitResult("http", "localhost", "/path", query="", fragment="",
>>> has_fragment=True)
>>> url2.has_fragment
True
>>> url2.has_query
False
>>> url2.geturl()
"http://localhost/path#";
Is it also worth adding “has_params” for urlparse()?
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<http://bugs.python.org/issue22852>
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