Extract email sub-strings from large document

Question

I have a very large .txt file with hundreds of thousands of email addresses scattered throughout. They all take the format:

......
         


        

Answer 1

import re 
txt = 'hello from absc@gmail.com to par1@yahoo.com about the meeting @2PM'
email  =re.findall('\S+@\S+',s)
print(email)

Printed output:

['absc@gmail.com', 'par1@yahoo.com']