I use {% if user in users %} in template, but get this error:
TemplateSyntaxError: 'if' statement improperly formatted
Does Django template have no IN operator on Google Appengine? Is there a way to achieve like this?
The in operator is definitely present in Django templates 1.2, but it probably isn't available in the much less powerful 0.96 templates, which is the default in the current version of the AppEngine SDK. It is fairly simple to switch to 1.2. The instruction are in the AppEngine Docs.