fix: only raise URLError or HTTPError when there are no results at all

[kyluca]

As discussed in #267 (comment)

One of the scenarios in which a URLError is received is when the request for a page fails on a subset of the platforms, but some platforms succeed. In this case, we should display the result that was retrieved successfully instead of throwing an error.

Sample output:

This shows the subset of requests that failed and the one that succeeded, then displays the result. The extra logging to demonstrate the process locally I removed before committing.

This will resolve the error I received earlier:

Error fetching from tldr: <urlopen error _ssl.c:990: The handshake operation timed out>

[sebastiaanspeck]

I can imagine that you only want to see the logging you have shown in the screenshot if you add a --verbose/--debug flag to the command and not for every command you do.

[kyluca]

Yeah that's right, the logging sample was related to some local testing I did for #267 but isn't present in this branch/PR.

Here is an updated screenshot of the current output from this branch:

[kyluca]

For completeness, this is the error I get on the current main branch without the fix:

[kbdharun]

LGTM, thanks for your contribution. I have tested the changes locally, so the PR is GTG.