Jinja: 正确的标识符跟踪

你怎么知道你受到这个问题的影响？ 你会得到一些类似于“未绑定变量 l_SOMETHING”的内容。

来自#pocoo 刚刚：

magicbronson: hey mitsuhiko et al., trying to render a Jinja template in a Flask app and getting a very mysterious message: "global name 'l_config' is not defined"
magicbronson: l_config appears nowhere in my code or libraries'
mitsuhiko: magicbronson: that's the scoping bug that i will fix over this summer 
mitsuhiko: {% macro foo() %}{{ config }}{% for config in something_else %}{{config}}{% endfor %}{% endmacro %}
mitsuhiko: something like this triggers the bug currently
mitsuhiko: magicbronson: rename the variable inside of the macro to something else
mitsuhiko: {% set cfg = config %}
mitsuhiko: outside the macro
mitsuhiko: or something

Armin 的建议解决了这个问题。

这终于完成了。