How to increment a variable on a for loop in jinja template?

by

You could use loop.index:

{% for i in p %}
  {{ loop.index }}
{% endfor %}

Check the template designer documentation.

In more recent versions, due to scoping rules, the following would not work:

{% set count = 1 %}
{% for i in p %}
  {{ count }}
  {% set count = count + 1 %}
{% endfor %}

More Related Contents:

  1. Link to Flask static files with url_for
  2. Passing HTML to template using Flask/Jinja2
  3. Reference template variable within Jinja expression
  4. Is it possible to use AngularJS with the Jinja2 template engine?
  5. Call a python function from jinja2
  6. Comments not working in jinja2
  7. Serve image stored in SQLAlchemy LargeBinary column
  8. Create dynamic arguments for url_for in Flask
  9. zip(list1, list2) in Jinja2?
  10. Get lengths of a list in a jinja2 template
  11. How to iterate through a list of dictionaries in Jinja template?
  12. Python Flask Render Text from Variable like render_template
  13. Loading external script with jinja2 template directive
  14. How can I update a .yml file, ignoring preexisting Jinja syntax, using Python?
  15. How do I format a date in Jinja2?
  16. Reload Flask app when template file changes
  17. Jinja2: Change the value of a variable inside a loop
  18. Serve static files from a CDN rather than Flask in production
  19. Jinja render text in HTML preserving line breaks
  20. How to use jinja2 as a templating engine in Django 1.8
  21. How to generate an html directory list using Python
  22. How to navigate through FastAPI routes by clicking on HTML button in Jinja2 Templates?
  23. Link to a specific location in a Flask template
  24. Converting Flask form data to JSON only gets first value
  25. How to use url_for() to pass path and query data to a route using FastAPI and Jinja2?
  26. How to use g.user global in flask
  27. How to get list of all variables in jinja 2 templates
  28. ImportError: cannot import name ‘Markup’ from ‘jinja2’
  29. Change the value of a variable inside a loop
  30. How to output loop.counter in python jinja template?

Leave a Comment