parameters: (self, sig, codegen)
return_statement: return (sig, codegen.magic_tuple())
docstring: Compute index key for the given signature and codegen.
          It includes a description of the OS and target architecture.
docstring_summary: Compute index key for the given signature and codegen.
          It includes a description of the OS and target architecture.
docstring_tokens: Compute index key for the given signature and codegen . It includes a description of the OS and target architecture .
function: def _index_key(self, sig, codegen):
          """
          Compute index key for the given signature and codegen.
          It includes a description of the OS and target architecture.
          """
          return (sig, codegen.magic_tuple())
function_tokens: def _index_key ( self , sig , codegen ) : return ( sig , codegen . magic_tuple ( ) )