ipy_leo: use pprint instead of str as default %leo formatter

IPython/Extensions/ipy_leo.py

@@ -1,45 +1,46 b''
 import IPython.ipapi
 ip = IPython.ipapi.get()
 
 from IPython.external.simplegeneric import generic 
+import pprint
 
 @generic
 def format_for_leo(obj):
     """ Convert obj to string representiation (for editing in Leo)"""
-    return str(obj)
+    return pprint.pformat(obj)
 
 @format_for_leo.when_type(list)
 def format_list(obj):
     return "\n".join(str(s) for s in obj)
 
 
 def add_var(self,varname):
     ip = self.getapi()
     leo = ip.user_ns['leox']
     c,g = leo.c, leo.g
     nodename = '@ipy-var ' + varname
     p2 = g.findNodeAnywhere(c,nodename)
     if not c.positionExists(p2):
         p2 = c.currentPosition().insertAfter()
         c.setHeadString(p2,'@ipy-var ' + varname)
         
     c.setCurrentPosition(p2)
     val = ip.user_ns[varname]
     formatted = format_for_leo(val)
     c.setBodyString(p2,formatted)
 
 def leo_f(self,s):
     ip = self.getapi()
     s = s.strip()
     if s in ip.user_ns:
         add_var(self,s)
 
 ip.expose_magic('leo',leo_f)