code: def test_popnegatif_(self):
      self.run_test(
          "def popnegatif_(a):\n b=[1,3,4,5,6,7]\n return b.pop(a)",
          -2,
          popnegatif_=[int],
      )
  
imports: from pythran.tests import TestEnv
  from pythran.typing import List, NDArray
  import numpy
label_desc: Use image node_id 9 for calling the TestList obj's underlying member method code with example usage: obj.test_popnegatif_() without return types