hevm VS web3.py

hevm - written in Haskel

However, since we are using a pure Solidity stack, writing tests with ds-test and running them with dapp.tools or foundry, this was a bit more complicated.

There's also jshon which is a simple stack-based DSL for constructing JSON from shell scripts.

http://kmkeen.com/jshon/

It's written in C and is not actively developed. The latest commit, it seems, was a pull request from me back in 2018 that fixed a null-termination issue that led to memory corruption.

Because I couldn't rely on jshon being correct, I rewrote it in Haskell here:

https://github.com/dapphub/dapptools/tree/master/src/jays

This is also not developed actively but it's a single simple ~200 line Haskell program.

It fits into the stack the same way that Hardhat, Truffle, and Dapp Tools do.

I find it insane that much of Solidity code testing is still happening in external languages. I've recently found https://github.com/dapphub/dapptools and that has blown a lot of my confusion away.

Honourable mention would be https://github.com/dapphub/dapptools for those who prefer UNIX-like tooling, but I'd say for the most part Foundry seems to be the better choice now.

Firstly, I'm warning you that I'm going to shill some amazing things in the Ethereum ecosystem. I would even go so far to say as some of these things are so positive sum and self-evidently public goods that shilling them in the ethereum subreddit should be considered neutral. For example, GitcoinDAO is a place where we all have the permissionless ability to coordinate in building tools and services, like dapptools, for all open-source software, full stop. There's ways to fundraise in public besides joining Discord or sliding into Twitter DM's, like Juicebox. There is a plethora of industry leaders exploring decentralized hosting for bluechip-scale applications, such as Skynet.

Dapptools is another framework that has nothing to do with JavaScript.

you can also write your own key generator using web3.py (https://github.com/ethereum/web3.py, see this part of the docs https://web3py.readthedocs.io/en/latest/web3.eth.account.html#creating-a-private-key)

I understand from literally the only other thread about this on the internet (https://github.com/ethereum/web3.py/issues/879) that web3 removed 'KeepAliveRPCProvider' from newer versions. Is there a fix for this or is this tool obsolete now?

There's also Github where many people have posted open source projects such as this: https://github.com/ethereum/web3.py

That's only somewhat true. JavaScript is overwhelmingly the most popular language for tooling but tools for/in other languages do exist. Especially if you like Python, you can use Brownie for a framework and you can even write contracts in Vyper or Fe both of which are Python-inspired alternatives to Solidity. There are also Python-based alternatives to libraries like web3.py for example.

This is because Web3 does the mapping internally. If we look at the web3.py source code, when web3.py receives a string pending, it will be mapped to eth_newPendingTransactionFilter, and when web3.py receives a dictionary, it is mapped to eth_newFilter.