Update black command to use regex pattern

[fselmo]

What was wrong?

• Running black locally via tox or make lint has never really worked for me. This regex way to set up the black command via tox seems to work a bit better locally and regex seems to be the recommended way to run the command.

Todo:

• Add entry to the release notes

Cute Animal Picture

[pacrob]

regex seems to be the recommended way to run the command.

Could you add a link to your reference? Thanks!

[fselmo]

Could you add a link to your reference? Thanks!

Clicking the CLI reference down arrow here:

Options:
    ...
    
    --exclude TEXT                A regular expression that matches files and
                                  directories that should be excluded on
                                  recursive searches. An empty value means no
                                  paths are excluded. Use forward slashes for
                                  directories on all platforms (Windows, too).
                                  Exclusions are calculated first, inclusions
                                  later. [default: /(\.direnv|\.eggs|\.git|\.h
                                  g|\.mypy_cache|\.nox|\.tox|\.venv|venv|\.svn
                                  |\.ipynb_checkpoints|_build|buck-
                                  out|build|dist|__pypackages__)/]
                                  
    --extend-exclude TEXT         Like --exclude, but adds additional files
                                  and directories on top of the excluded ones.
                                  (Useful if you simply want to add to the
                                  default)

[fselmo]

@pacrob come to think of it, we could probably just use --exclude like so:

black {toxinidir}/ens {toxinidir}/ethpm {toxinidir}/web3 {toxinidir}/tests {toxinidir}/setup.py --exclude /ethpm/ethpm-spec/|/ethpm/_utils/protobuf/ipfs_file_pb2\.py --check

Any preference between the two?

[pacrob]

Any preference between the two?

Slight preference for the latter

[fselmo]

Slight preference for the latter

Same. I'll update the commit.

[pacrob]

lgtm!