Is there any way to do this with jinja2?
template = Template("{{ var1 }}{{ var2 }}")
rendered1 = template.render(var1=5) # "5-{{ var2 }}"
rendered2 = Template(rendered1).render(var2=6) # "5-6"
basically, I want to be able to do multiple passes on a template. When the template engine finds a variable in the template that is not in the context, instead of replacing it with nothing, keep the template variable intact? If not jinja2, is there any other python template library that can do this?
Some of the features of Jinja are: sandboxed execution. automatic HTML escaping to prevent cross-site scripting (XSS) attacks. template inheritance.
from_string . Jinja 2 provides a Template class that can be used to do the same, but with optional additional configuration. Jinja 1 performed automatic conversion of bytes in a given encoding into unicode objects.
You can use DebugUndefined, which keeps the failed lookups, as your Undefined Type for the undefined
parameter of the Template
environment:
>>> from jinja2 import Template, DebugUndefined
>>> template = Template("{{ var1 }}-{{ var2 }}", undefined=DebugUndefined)
>>> rendered1 = template.render(var1=5) # "5-{{ var2 }}"
>>> print(rendered1)
5-{{ var2 }}
>>> rendered2 = Template(rendered1).render(var2=6) # "5-6"
>>> print(rendered2)
5-6
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