python - How to access an array with TAL -

i have python file creates array path image , page url

self.banner1 = [self.context.defaultbanner1.filename,self.context.defaultbanner1burl] 

i want access within page using tal. have tried without success

<h1 tal:content="view/banner1[0]"></h1> 

how access array using tal?

you can't path expression, can use python expression:

<h1 tal:content="python:view.banner1[0]" />