\methodline[numeric object]{__ixor__}{self, other}
\methodline[numeric object]{__ior__}{self, other}
These methods are called to implement the augmented arithmetic
-operations (\code{+=}, \code{-=}, \code{*=}, \code{/=}, \code{\%=},
-\code{**=}, \code{<<=}, \code{>>=}, \code{\&=},
+operations (\code{+=}, \code{-=}, \code{*=}, \code{/=}, \code{//=},
+\code{\%=}, \code{**=}, \code{<<=}, \code{>>=}, \code{\&=},
\code{\textasciicircum=}, \code{|=}). These methods should attempt to do the
operation in-place (modifying \var{self}) and return the result (which
could be, but does not have to be, \var{self}). If a specific method