How can I use regular expressions in Django?

How can I use regular expressions in Django?

You can use the re module in Python to work with regular expressions in Django. What specific use case do you have in mind?

I want to validate a user's email address using a regex pattern.

You can use the following regex pattern: r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}$'. You can implement this in your Django form's clean method.

Can you show me an example of how to implement that in a Django form?

Sure! Here's a simple example:

from django import forms
import re

class UserForm(forms.Form):
    email = forms.EmailField()

    def clean_email(self):
        email = self.cleaned_data.get('email')
        if not re.match(r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$', email):
            raise forms.ValidationError('Invalid email address')
        return email