{% cycle 'value_1' 'value_2' %}

{% for o in some_list %}
    <tr class="{% cycle 'row1' 'row2' %}">
        ...
    </tr>
{% endfor %}

# import Http Response from django
from django.shortcuts import render
 
# create a function
def geeks_view(request):
    # create a dictionary
    context = {
        "data" : [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
    }
    # return response
    return render(request, "geeks.html", context)

from django.urls import path
 
# importing views from views.py
from .views import geeks_view
 
urlpatterns = [
    path('', geeks_view),
]

{% for i in data %}
    <div class="{% cycle 'row1' 'row2' %}">
        {{ i }}
    </tr>
{% endfor %}

{% for o in some_list %}
    <tr class="{% cycle rowvalue1 rowvalue2 %}">
        ...
    </tr>
{% endfor %}