Latest version of isbnlib is 3.5.8 according to google search result, and that version fully accessible on official PyPI site with this link.
but pip search and manual search on PyPI site result only give me up to one version before, 3.5.7.
Please explain something about it.
Thanks!
Package authors submit packages to PyPI (the Python Package Index). So PyPi is not in charge of keeping the latest version. But it is very easy to find downloads for 3.5.8 then click downloads. Also, you could download it from github and install it yourself.