Short answer: You won’t find a legal, safe, “gratis” download of Andrei Neagoie’s Complete Python Developer in 2020: Zero to Mastery — but you can access the exact course (and much more) without paying a cent, legally.
Instead, learn the Python for free from the sources above. Your future self (and your computer’s health) will thank you. Have a library card? Go check their e‑resources right now — you might already have free Udemy. That’s the only “gratis” worth using. Short answer: You won’t find a legal, safe,