hatti

accounts/abi/bind: keep test file package name consistent

1

This PR adds some small code cleanup: - accounts/abi/bind: keep test file package name consistent - common: sort variables to make code more clear - core: remove redundant type declaration

## Description update the Vitalik blog link as it moves to a new domain. source: https://github.com/vbuterin/blog --- Before we can merge this PR, please make sure that all the following...

remove duplicate words in comments to improve readability.

remove the duplicate flag `--extra-index-url https://pypi.nvidia.com/` in `pip` command