WTForms: Install 'email_validator' for email validation support

python flask wtforms
VeeDuvv picture VeeDuvv · Apr 22, 2020 · Viewed 41.9k times · Source

Getting exception when running the following code for form validation. 

File "/Users/homeduvvuri/Documents/Learning/PartyGoUdemy/PartGo/user/forms.py", line 11, in BaseUserForm
    email = EmailField('Email', [validators.DataRequired(), validators.Email()])
File "/Users/homeduvvuri/Documents/Learning/PartyGoUdemy/PartGo/partgo-env/lib/python3.7/site-packages/wtforms/validators.py", line 332, in __init__
    raise Exception("Install 'email_validator' for email validation support.")
Exception: Install 'email_validator' for email validation support.

Runs perfectly on codeanywhere VM. Does not on local machine.

from flask_wtf import FlaskForm
from flask_wtf.file import FileField, FileAllowed
from wtforms import Form, StringField, PasswordField, validators, ValidationError
from wtforms.validators import InputRequired, Email
from wtforms.fields.html5 import EmailField
from wtforms.widgets import TextArea
from user.models import User

class BaseUserForm(FlaskForm):
    name = StringField('Name', [validators.DataRequired(), validators.Length(min=2, max=30)])
    email = EmailField('Email', [validators.DataRequired(), validators.Email()])

Answer

ivan_filho picture ivan_filho · Apr 22, 2020

If you take a look at wtforms/validators.py file in line 9:

import email_validator

Just install the package:

pip install email_validator

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