Add gif formatter

IPython/core/formatters.py

@@ -74,6 +74,7 b' class DisplayFormatter(Configurable):'
             MarkdownFormatter,
             SVGFormatter,
             PNGFormatter,
+            GIFFormatter,
             PDFFormatter,
             JPEGFormatter,
             LatexFormatter,
@@ -779,6 +780,24 b' class JPEGFormatter(BaseFormatter):'
     _return_type = (bytes, str)
 
 
+class GIFFormatter(BaseFormatter):
+    """A PNG formatter.
+
+    To define the callables that compute the GIF representation of your
+    objects, define a :meth:`_repr_gif_` method or use the :meth:`for_type`
+    or :meth:`for_type_by_name` methods to register functions that handle
+    this.
+
+    The return value of this formatter should be raw GIF data, *not*
+    base64 encoded.
+    """
+    format_type = Unicode('image/gif')
+
+    print_method = ObjectName('_repr_gif_')
+    
+    _return_type = (bytes, str)
+
+
 class LatexFormatter(BaseFormatter):
     """A LaTeX formatter.
 
@@ -973,6 +992,7 b' FormatterABC.register(HTMLFormatter)'
 FormatterABC.register(MarkdownFormatter)
 FormatterABC.register(SVGFormatter)
 FormatterABC.register(PNGFormatter)
+FormatterABC.register(GIFFormatter)
 FormatterABC.register(PDFFormatter)
 FormatterABC.register(JPEGFormatter)
 FormatterABC.register(LatexFormatter)

IPython/utils/capture.py

@@ -48,6 +48,9 b' class RichOutput(object):'
     
     def _repr_jpeg_(self):
         return self._repr_mime_("image/jpeg")
+        
+    def _repr_gif_(self):
+        return self._repr_mime_("image/gif")
     
     def _repr_svg_(self):
         return self._repr_mime_("image/svg+xml")
@@ -162,5 +165,3 b' class capture_output(object):'
         if self.display and self.shell:
             self.shell.display_pub = self.save_display_pub
             sys.displayhook = self.save_display_hook
-
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