问题描述
如何在 Jinja2 参数列表声明中添加注释?
How can I put comments inside Jinja2 argument list declaration ?
我尝试过的一切都会出错:jinja2.exceptions.TemplateSyntaxError: unexpected char u'#'
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 -%}
在我的例子中,Jinja2 被用作汇编程序的宏预处理器.
In my case Jinja2 is used as macro preprocessor for assembler.
推荐答案
Jinja2 不支持 {{ ... }} 语句中的注释.您只能在此类语句的外部使用注释,然后只能使用 {# .. #} 或 ## comment.
Jinja2 has no support for comments within a {{ ... }} statement. You can only use comments outside of such statements, and then only with {# .. #} or ## comment.
- {# .. #} 仅用于禁用模板的一部分或在其他 Jinja2 语法之外添加注释.你不能嵌套这些.
- # statement 等价于 {% statement %},如果 行语句已启用并进行配置.
- ## comment 仅在启用 line 语句时才有效,此时它被视为注释.
- {# .. #} 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.
通常,在 Jinja 语句之外,使用目标语言的注释来代替;例如 生成XML时等
Generally, outside of Jinja statements, use comments in the target language instead; e.g. <!-- comment --> when generating XML, etc.