Here is an example:
>>> from validators import url
>>> url("https://www.example-domain.com/us/blog/the-longest-path-i-can-even-write-with-more-than-64-chars")
ValidationFailure(
func=url,
args={
'reason': "encoding with 'idna' codec failed (UnicodeError: label too long)",
'value': 'https://www.example-domain.com/us/blog/the-longest-path-i-can-even-write-with-more-than-64-chars'
}
)
>>> url("https://www.example-domain.com/us/blog/the-longest-path-i-can-even-write-with-more-than-64-ch")
True
This is due to IDNA encoding used (Internationalized Domain Names in Applications) for paths, which specifies a maximum number of 64 characters:
https://github.com/python-validators/validators/blob/0.20.9/validators/url.py#L106
Here is where the UnicodeError is raised from the standard lib:
https://github.com/python/cpython/blob/main/Lib/encodings/idna.py#L99,L101
Although this limitation makes sense for domains, I don't know if it's valid for URL paths. The internet is full of that kind of URLs.
Here is an example:
This is due to IDNA encoding used (Internationalized Domain Names in Applications) for paths, which specifies a maximum number of 64 characters:
https://github.com/python-validators/validators/blob/0.20.9/validators/url.py#L106
Here is where the UnicodeError is raised from the standard lib:
https://github.com/python/cpython/blob/main/Lib/encodings/idna.py#L99,L101
Although this limitation makes sense for domains, I don't know if it's valid for URL paths. The internet is full of that kind of URLs.