Error with Thousand Separator in Jinja2 on Google App Engine

Question

I'm working on YouTube Data API. I'm trying to display the viewCount from the video statistics in my HTML using jinja2 on Google App Engine.

When I specify constant values like in my template like:

{{ '{0:,}'.format(1234567890) }} 

the output works okay as:

 1,234,567,890

However, if I specify the code as:

 {{ '{0:,}'.format(video_item.statistics.viewCount) }} 

It does not work and displays internal server error saying:

{{ '{0:,}'.format(vivi.statistics.viewCount) }}, ValueError: Cannot specify ',' with 's'.

I'm not sure what that means.

However,

{{video_item.statistics.viewCount}}

works correctly. Can someone help me out please? Thanks

Answer 1

@matthias-eisen thankx for your answer. It worked fine. In Jinja2, int(some_string) does not work. I used:

some_string | int

So for my question, it should be:

{{ '{0:,}'.format(video_item.statistics.viewCount | int) }}

Answer 2

The API passes viewCount as a string (see https://developers.google.com/apis-explorer/#p/youtube/v3/youtube.videos.list?part=statistics&id=I90H3dN2HbI&_h=2&).

Inside the Handler:

view_count = '{0:,}'.format(int(video_item.statistics.viewCount))

Inside the Template:

{{ view_count }}

Also: http://docs.python.org/2/library/string.html#format-specification-mini-language