run -c "from jinja2 import escape; escape('<foo>'); escape('<foo>')"
bt
run -c "from jinja2 import escape; escape('<foo>'); escape('<foo>')"
bt
run -c "from jinja2 import escape; escape('<foo>'); escape('<foo>')"
run -c "from jinja2._speedups import call_with_context; call_with_context(None, lambda: None)"
bt
