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Jinja2 inline comments

How can I put comments inside Jinja2 argument list declaration ?

Everything I have tried gives an error: jinja2.exceptions.TemplateSyntaxError: unexpected char u'#'

{{ Switch('var',     [('1', 'foo'),    #  comment 1      ('2', 'bar'),    ## comment 2      ('3', 'rum'),    {# comment 3 #}      ]) }}   {% macro Switch(var, caselist) %}     {% for case, action in caselist%}         CMP  {{var}} {{case}}          JNE  {{LABEL}}         {{action}}         JMP  {{LABELF}} {{LABEL}}:  NOP     {%- endfor %} {{LABELF}}: NOP {%- endmacro -%} 

In my case Jinja2 is used as macro preprocessor for assembler.

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kimstik Avatar asked Nov 26 '12 09:11

kimstik


2 Answers

Jinja2 has no support for comments within a {{ ... }} statement. You can only use comments outside of such statements, and then only with {# .. #} or ## comment.

  • {# .. #} is only meant for disabling part of a template or adding comments outside of other Jinja2 syntax. You can't nest these.
  • # statement is the equivalent of {% statement %}, if line statements are enabled and so configured.
  • ## comment only works if line statements are enabled, at which point it regarded as a comment.

Generally, outside of Jinja statements, use comments in the target language instead; e.g. <!-- comment --> when generating XML, etc.

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Martijn Pieters Avatar answered Sep 29 '22 14:09

Martijn Pieters


Now Jinja2 has a comment statement:

{% comment %}      <html code/>     {% some other statements %}     {{ some.values }}  {% endcomment %} 
like image 45
Dan Netoff Avatar answered Sep 29 '22 16:09

Dan Netoff