do they work

[newgirlongithub]

none of them have worked for me, here are some of the errors i get:
Proxy error: 407 Proxy Authentication Required
Proxy error: 400 Bad Request
Invalid proxy response
[Errno 111] Can not connect to proxy xyz [Connect call failed ('xyz)]
Proxy connection timed out: 10
is it the proxy or my code?

[ghost]

Read the responses you're getting, the proxies are technically working but as the responses state, some of them require authentication, and some of them are a result of a bad request sent by your code, could be an issue from your code or their end.

What you can do is write a [python or bash] script to test each proxy to filter down the proxy list to valid working ones.

[codepyth]

none of the proxy work. that's totally useless. guys don't waste your time with it.

[perlsol]

oh the small minds!
127.0.0.7 shouldn't be in there ;)

[bitsydarel]

They definitely work, you have to create a script to filter the one that require authentication or are no longer valid.
I used them almost everyday for my pentesting using proxychains4.

[TheSpeedX]

These proxies are publicly sourced. As @bitsydarel suggested, You will have to pass them through a proxy validator before using it.
It is not feasible for me to check every minute and update it. This checks will have to be performed on usage side.