xxxxxxxxxx
import hmac
import hashlib
hmac.new(secret.encode(), data_str.encode(), hashlib.sha256).hexdigest()
xxxxxxxxxx
import hmac
import hashlib
dig = hmac.new(bytes(secret, 'latin-1'), msg=bytes("timestamp=1591702613943",'latin-1' ) , digestmod=hashlib.sha256).hexdigest()