dataclass_function.py

from dataclasses import dataclass

@dataclass
class User:
    email: str
    name: str = "First name"
    surname: str = "Last name"
    
    def fullName(self):
        return self.name + " " + self.surname

user_instance = User('[email protected]','Petros', 'Demetrakopoulos',)
print(user_instance)
print(user_instance.fullName())