Method normalize_email

django/contrib/auth/base_user.py:23–34

Normalize the email address by lowercasing the domain part of it.

(cls, email)

class BaseUserManager(models.Manager):
    @classmethod
    def normalize_email(cls, email):
        """
        Normalize the email address by lowercasing the domain part of it.
        """
        email = email or ""
        try:
            email_name, domain_part = email.strip().rsplit("@", 1)
        except ValueError:
            pass
        else:
            email = email_name + "@" + domain_part.lower()
        return email

    def get_by_natural_key(self, username):
        return self.get(**{self.model.USERNAME_FIELD: username})