> My reading of README.md is that Black inserts spaces around the colon, is that right? I can't speak for the readme, but: $ cat test.py x = [1,2,3]

> My reading of README.md is that Black inserts spaces around the colon, is that right? I can't speak for the readme, but: $ cat test.py x = [1,2,3] print(x[1: 3]) $ black test.py reformatted test.py $ cat test.py x = [1, 2, 3] print(x[1:3])