From 0f285a7157085523f202bacce19e1ee9d6b62c7b 2011-02-22 17:37:32
From: MinRK <benjaminrk@gmail.com>
Date: 2011-02-22 17:37:32
Subject: [PATCH] tweak exceptions in %precision
---

diff --git a/IPython/core/magic.py b/IPython/core/magic.py
index 2c9f62b..977c3f3 100644
--- a/IPython/core/magic.py
+++ b/IPython/core/magic.py
@@ -3504,15 +3504,15 @@ Defaulting color scheme to 'NoColor'"""
             fmt = s
             try:
                 fmt%3.14159
-            except:
-                raise TypeError("Precision must be int or format string, not %r"%s)
+            except Exception:
+                raise ValueError("Precision must be int or format string, not %r"%s)
         elif s:
             # otherwise, should be an int
             try:
                 i = int(s)
                 assert i >= 0
-            except:
-                raise TypeError("Precision must be non-negative int or format string, not %r"%s)
+            except (ValueError, AssertionError):
+                raise ValueError("Precision must be non-negative int or format string, not %r"%s)
             
             fmt = '%%.%if'%i
             if 'numpy' in sys.modules: