Fixes for print function

- Add ipython display

Author: dbrattli

examples/microbit/README.md

@@ -7,7 +7,8 @@ very limited what we can do. Parts of Fable Library needs to
 be ported to work with MicroPython see `util.fs` as an example.
 
 The micro:bit have a flat file-system so all files needs to be in the
-same top-level directory.
+same top-level directory. For more information see
+https://microbit-micropython.readthedocs.io/en/latest/tutorials/storage.html
 
 ## Install Dependecies
 

src/jupyter/IPython.fs

@@ -2,5 +2,12 @@ module Fable.Python.IPython
 
 open Fable.Core
 
-[<Import("display", "IPython.display")>]
-let display<'T>(obj: 'T) : unit = nativeOnly
+type IDisplay =
+    abstract display : value: obj -> unit
+    abstract Code : data: string -> unit
+    [<Emit("display.Code($1, language=$2)")>]
+    abstract Code : data: string * language: string -> unit
+
+[<Import("display", "IPython")>]
+let display : IDisplay = nativeOnly
+

src/stdlib/Builtins.fs

@@ -138,4 +138,4 @@ let builtins: IExports = nativeOnly
 let __name__: string = nativeOnly
 
 /// Python print function. Takes a single argument, so can be used with e.g string interpolation.
-let print = builtins.print
+let print obj = builtins.print obj