Use of pprint.pformat

[snippsat]

You don't use fileObj,it's not needed either.

import pprint

cats = [{'name': 'Zophie', 'desc': 'chubby'}, {'name': 'Pooka', 'desc': 'fluffy'}]
with open('cats.txt', 'w') as f:
    f.write('cats = ' + pprint.pformat(cats) + '\n')
with open('cats.txt') as f:
    print(f.read())

If you to use a path with open(r'C:\Python36\kodovi\'cats.txt', 'w') as f:
The modern way,as mention before so do not @Al Sweigart care about new stuff in Python,
like string formatting he use + everywhere and stuff like pprint.pformat() to build a string.

cats = [{'name': 'Zophie', 'desc': 'chubby'}, {'name': 'Pooka', 'desc': 'fluffy'}]
with open('cats.txt', 'w') as f:
    f.write(f'cats = {cats}\n')
with open('cats.txt') as f:
    print(f.read())