Bad magic number in random

So I keep getting an error over and over and I don't know how to fix it. Here's the error:

ImportError: bad magic number in 'random': b'\x03\xf3\r\n'

This error occurs in the following cases:

• import random
• import smtplib
• from pyttsx3 import init; engine = init()

What am I supposed to do to fix this error?