Add registrationForm

app/auth/forms.py

 from flask_wtf import FlaskForm
 from wtforms import StringField, PasswordField, BooleanField, SubmitField
-from wtforms.validators import DataRequired, Length, Email
+from wtforms.validators import DataRequired, Length, Email, Regexp, EqualTo
+from wtforms import ValidationError
+from ..models import User
 
 
 class LoginForm(FlaskForm):
@@ -9,3 +11,7 @@ class LoginForm(FlaskForm):
     password = PasswordField('Password', validators=[DataRequired()])
     remember_me = BooleanField('Keep me logged in')
     submit = SubmitField('Log In')
+
+
+class RegistrationForm(FlaskForm):
+    email = StringField('Email', validators=[DataRequired(), Length(1, 64), Email()])