ErrorMessage

x.__add__(y) <==> x+y

x.__contains__(y) <==> y in x

x.__eq__(y) <==> x==y

S.__format__(format_spec) -> string

x.__ge__(y) <==> x>=y

x.__getitem__(y) <==> x[y]

x.__getslice__(i, j) <==> x[i:j]

Use of negative indices is not supported.

x.__gt__(y) <==> x>y

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

x.__le__(y) <==> x<=y

x.__len__() <==> len(x)

x.__lt__(y) <==> x<y

x.__mod__(y) <==> x%y

x.__mul__(n) <==> x*n

x.__ne__(y) <==> x!=y

x.__rmod__(y) <==> y%x

x.__rmul__(n) <==> n*x

S.__sizeof__() -> size of S in memory, in bytes

Abstract classes can override this to customize issubclass().

This is invoked early on by abc.ABCMeta.__subclasscheck__(). It should return True, False or NotImplemented. If it returns NotImplemented, the normal algorithm is used. Otherwise, it overrides the normal algorithm (and the outcome is cached).