Method pop

IPython/core/formatters.py:509–548

Pop a formatter for the given type. Parameters ---------- typ : type or '__module__.__name__' string for a type default : object value to be returned if no formatter is registered for typ. Returns ------- obj : object

(self, typ, default=_raise_key_error)

        return oldfunc
    
    def pop(self, typ, default=_raise_key_error):
        """Pop a formatter for the given type.

        Parameters
        ----------
        typ : type or '__module__.__name__' string for a type
        default : object
            value to be returned if no formatter is registered for typ.

        Returns
        -------
        obj : object
            The last registered object for the type.

        Raises
        ------
        KeyError if the type is not registered and default is not specified.
        """
        
        if isinstance(typ, str):
            typ_key = tuple(typ.rsplit('.',1))
            if typ_key not in self.deferred_printers:
                # We may have it cached in the type map. We will have to
                # iterate over all of the types to check.
                for cls in self.type_printers:
                    if _mod_name_key(cls) == typ_key:
                        old = self.type_printers.pop(cls)
                        break
                else:
                    old = default
            else:
                old = self.deferred_printers.pop(typ_key)
        else:
            if typ in self.type_printers:
                old = self.type_printers.pop(typ)
            else:
                old = self.deferred_printers.pop(_mod_name_key(typ), default)
        if old is _raise_key_error:
            raise KeyError("No registered value for {0!r}".format(typ))
        return old

    def _in_deferred_types(self, cls):
        """