Why it's not working?

Question

https://code.sololearn.com/c8dhBCQv1yG9/?ref=app

Answer 1

https://code.sololearn.com/ckapnwMemmw5/?ref=app

Answer 2

the module is not in the library.

Answer 3

Because Sololearn doesn't provides all modules.. It is online. All things is done through their server.

Answer 4

Reading error message is very important. It says that there is no module named 'automata'

Answer 5

Thanks