From 71adf2acf9e62a459ed530d430969f4b8758f2f7 Mon Sep 17 00:00:00 2001
From: James Goppert <james.goppert@gmail.com>
Date: Tue, 25 Mar 2014 10:02:13 -0400
Subject: [PATCH] Defined __repr__ for tf/ss

Makes display work for IPython.
---
 src/statesp.py | 4 ++++
 src/xferfcn.py | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/statesp.py b/src/statesp.py
index 96eb1dd40..c9343ebe9 100644
--- a/src/statesp.py
+++ b/src/statesp.py
@@ -12,6 +12,7 @@
 StateSpace._remove_useless_states
 StateSpace.copy
 StateSpace.__str__
+StateSpace.__repr__
 StateSpace.__neg__
 StateSpace.__add__
 StateSpace.__radd__
@@ -225,6 +226,9 @@ def __str__(self):
             str += "\ndt = " + self.dt.__str__() + "\n"
         return str
 
+    # represent as string, makes display work for IPython
+    __repr__ = __str__
+
     # Negation of a system
     def __neg__(self):
         """Negate a state space system."""
diff --git a/src/xferfcn.py b/src/xferfcn.py
index b8fe721d7..d22b2a13b 100644
--- a/src/xferfcn.py
+++ b/src/xferfcn.py
@@ -12,6 +12,7 @@
 TransferFunction._truncatecoeff
 TransferFunction.copy
 TransferFunction.__str__
+TransferFunction.__repr__
 TransferFunction.__neg__
 TransferFunction.__add__
 TransferFunction.__radd__
@@ -316,6 +317,9 @@ def __str__(self, var=None):
             outstr += "\ndt = " + self.dt.__str__() + "\n"
 
         return outstr
+
+    # represent as string, makes display work for IPython
+    __repr__ = __str__
     
     def __neg__(self):
         """Negate a transfer function."""