call site 12 for code.Code.new
code/testing/test_code.py - line 53
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   def test_newcode_with_filename(): 
       source = "i = 3"
       co = compile(source, '', 'exec') 
       code = py.code.Code(co) 
       class MyStr(str): 
           pass 
       filename = MyStr("hello") 
       filename.__source__ = py.code.Source(source) 
->     newco = code.new(rec=True, co_filename=filename) 
       assert newco.co_filename is filename 
       s = py.code.Source(newco) 
       assert str(s) == source