21     def __add__(self, other):  argument
23     def __mul__(self, other):  argument
25     def __rmul__(self, other):  argument
35     def __add__(self, other):  argument
37     def __mul__(self, other):  argument
39     def __rmul__(self, other):  argument
73             def __eq__(self, other):  argument
87             def __ne__(self, other):  argument
231             def __matmul__(self, other):  argument
466             def __iadd__     (self, other): return "iadd"  argument
467             def __iand__     (self, other): return "iand"  argument
468             def __ifloordiv__(self, other): return "ifloordiv"  argument
469             def __ilshift__  (self, other): return "ilshift"  argument
470             def __imod__     (self, other): return "imod"  argument
471             def __imul__     (self, other): return "imul"  argument
472             def __imatmul__  (self, other): return "imatmul"  argument
473             def __ior__      (self, other): return "ior"  argument
474             def __ipow__     (self, other): return "ipow"  argument
475             def __irshift__  (self, other): return "irshift"  argument
476             def __isub__     (self, other): return "isub"  argument
477             def __itruediv__ (self, other): return "itruediv"  argument
478             def __ixor__     (self, other): return "ixor"  argument
479             def __getitem__(self, other): return 5  # so that C is a sequence  argument