How to output loop counter in python jinja template

Question

I want to be able to output the current loop iteration to my template    According to the docs  http   wsgiarea pocoo org jinja docs loops html  there is a loop counter variable that I am trying to use   I have the following    lt ul gt     for user in userlist       lt li gt           user      loop counter      lt  li gt           if loop counter    1              This is the First user          endif       endfor     lt  ul gt    Though nothing is being output to my template  What is the correct syntax

User · Accepted Answer

The counter variable inside the loop is called loop.index in jinja2.

>>> from jinja2 import Template

>>> s = "{% for element in elements %}{{loop.index}} {% endfor %}"
>>> Template(s).render(elements=["a", "b", "c", "d"])
1 2 3 4

See http://jinja.pocoo.org/docs/templates/ for more.

User · Answer

change this    if loop counter    1    to    if forloop counter    1      your code here     endfor   and this from    user      loop counter   to    user      forloop counter

User · Answer

in python  env   Environment loader FileSystemLoader  quot templates quot    env globals  quot enumerate quot     enumerate  in template     for k v in enumerate list        endfor

User · Answer

Inside of a for-loop block  you can access some special variables including loop index --but no loop counter  From the official docs   Variable    Description loop index  The current iteration of the loop   1 indexed  loop index0 The current iteration of the loop   0 indexed  loop revindex   The number of iterations from the end of the loop  1 indexed  loop revindex0  The number of iterations from the end of the loop  0 indexed  loop first  True if first iteration  loop last   True if last iteration  loop length The number of items in the sequence  loop cycle  A helper function to cycle between a list of sequences  See the explanation below  loop depth  Indicates how deep in a recursive loop the rendering currently is  Starts at level 1 loop depth0 Indicates how deep in a recursive loop the rendering currently is  Starts at level 0 loop previtem   The item from the previous iteration of the loop  Undefined during the first iteration  loop nextitem   The item from the following iteration of the loop  Undefined during the last iteration  loop changed  val   True if previously called with a different value  or not called at all

User · Answer

if you are using django use forloop counter instead of loop counter   lt ul gt     for user in userlist       lt li gt           user      forloop counter      lt  li gt           if forloop counter    1              This is the First user          endif       endfor     lt  ul gt

[python] How to output loop.counter in python jinja template?

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