code: def test_loopcontext0():
      in_lst = []
      lc = LoopContext(reversed(in_lst), None)
      assert lc.length == len(in_lst)
  
file_path: catboost/contrib/python/Jinja2/py3/tests/test_runtime.py
imports: import itertools
  from jinja2 import Template
  from jinja2.runtime import LoopContext
label_desc: Use image node_id 3 for calling a global function with example usage: test_loopcontext0() without return types