How can a red asterisk (*) be shown in Django forms?

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A red asterisk (*) can be shown in Django forms by using the HTML required attribute on the form fields and then adding CSS styling to the label to display the asterisk.

Here's an example:

# forms.py
from django import forms

class ContactForm(forms.Form):
    name = forms.CharField(label='Name*', required=True)
    email = forms.EmailField(label='Email*', required=True)
    message = forms.CharField(label='Message*', required=True, widget=forms.Textarea)

# template.html
<form method="post" action="{% url 'contact' %}">
    {% csrf_token %}
    <div class="form-group">
        {{ form.name.label_tag }} {{ form.name }}
    </div>
    <div class="form-group">
        {{ form.email.label_tag }} {{ form.email }}
    </div>
    <div class="form-group">
        {{ form.message.label_tag }} {{ form.message }}
    </div>
    <button type="submit" class="btn btn-primary">Submit</button>
</form>

# styles.css
label.required:after {
    content: " *";
    color: red;
}

In this example, the required attribute is set to True on the name, email, and message fields in the ContactForm. In the template, we render the form fields and their labels using label_tag and form_field methods. Finally, in the styles.css file, we add the :after CSS pseudo-selector to the label.required class to display the red asterisk.