From af3e34ccb0862af2e717e676b12516157896d420 Mon Sep 17 00:00:00 2001
From: Ray Speth <speth@mit.edu>
Date: Sun, 24 May 2015 19:45:26 -0400
Subject: [PATCH] [Python] Add repr functions to Species/Reaction classes

---
 interfaces/cython/cantera/reaction.pyx | 11 +++++++++++
 interfaces/cython/cantera/thermo.pyx   |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/interfaces/cython/cantera/reaction.pyx b/interfaces/cython/cantera/reaction.pyx
index 36938cc61..7d335986a 100644
--- a/interfaces/cython/cantera/reaction.pyx
+++ b/interfaces/cython/cantera/reaction.pyx
@@ -224,6 +224,12 @@ cdef class Reaction:
         def __set__(self, allow):
             self.reaction.allow_negative_orders = allow
 
+    def __repr__(self):
+        return '<{}: {}>'.format(self.__class__.__name__, self.equation)
+
+    def __str__(self):
+        return self.equation
+
 
 cdef class Arrhenius:
     r"""
@@ -268,6 +274,11 @@ cdef class Arrhenius:
         def __get__(self):
             return self.rate.activationEnergy_R() * gas_constant
 
+    def __repr__(self):
+        return 'Arrhenius(A={:g}, b={:g}, E={:g})'.format(
+            self.pre_exponential_factor, self.temperature_exponent,
+            self.activation_energy)
+
 
 cdef wrapArrhenius(CxxArrhenius* rate, Reaction reaction):
     r = Arrhenius(init=False)
diff --git a/interfaces/cython/cantera/thermo.pyx b/interfaces/cython/cantera/thermo.pyx
index 9427b4383..73462ec53 100644
--- a/interfaces/cython/cantera/thermo.pyx
+++ b/interfaces/cython/cantera/thermo.pyx
@@ -198,6 +198,9 @@ cdef class Species:
         def __set__(self, GasTransportData tran):
             self.species.transport = tran._data
 
+    def __repr__(self):
+        return '<Species {}>'.format(self.name)
+
 
 cdef class ThermoPhase(_SolutionBase):
     """