from django.contrib.auth import validators from django.db import migrations, models class Migration(migrations.Migration): dependencies = [ ("auth", "0007_alter_validators_add_error_messages"), ] operations = [ migrations.AlterField( model_name="user", name="username", field=models.CharField( error_messages={"unique": "A user with that username already exists."}, help_text=( "Required. 150 characters or fewer. Letters, digits and @/./+/-/_ " "only." ), max_length=150, unique=True, validators=[validators.UnicodeUsernameValidator()], verbose_name="username", ), ), ]