python and base64 encryption algorithm sha

Coding. 8 = UTF-# 
Import Base64 
from hashlib Import SHA1 

SHA = SHA1 () 
sha.update (B "AAA" + B "BBB") is equivalent to adding two strings # Update 
# sha.update (b'bbb ') 
AA = sha.hexdigest () 

STR = aa.encode (' UTF-. 8 ') 
bs64 = base64.b64encode (STR) 
Print (bs64) 

# b'NjhkODU3MmMyNjYyYjBmMDZmNzIzZDdkNTA3OTU0ZmIwMzhiODU1OA ==' 
# b'NjhkODU3MmMyNjYyYjBmMDZmNzIzZDdkNTA3OTU0ZmIwMzhiODU1OA == '