Python3.8 language code does not work when run in PowerShell. What should I do?

Question

Python

Hello! I am learning from Zed Shaw's book about Python 3. The book says that to check the exercise, the file with the code must be run in PowerShell. For some reason, the file was not found, it cannot be started. Although Python itself was downloaded from PATH, so everything seems to be ok. What to do?

Answer 1

Do you have a user named in Russian?