code: def test_delslice():
      l = DogmaticList([1, 2, 3])
      del l[1:]
      assert l == [1, 2, 3]
  
imports: import pytest
  from sacred.config.custom_containers import DogmaticDict, DogmaticList
label_desc: Use image node_id 12 for calling a global function with example usage: test_delslice() without return types