-fix NameError: name 'colors_j' is not defined.#33

yangyonggit wants to merge 1 commit intoVisualize-ML:mainVisualize-ML/Book4_Power-of-Matrix:mainfrom

yangyonggit:fix_book4_ch13yangyonggit/Book4_Power-of-Matrix:fix_book4_ch13Copy head branch name to clipboard