Unsupported operation :not writeable python
Unsupported operation :not writeable python
You open the variable file as a read only then attempt to write to it:
file = open(ValidEmails.txt,r)
Instead, use the w flag.
file = open(ValidEmails.txt,w)
...
file.write(email)
file = open(ValidEmails.txt,wb)
file.write(email.encode(utf-8, ignore))
This is solve your encode error also.