add more attributes to ModelChain repr

Author: wholmgren

pvlib/modelchain.py

@@ -322,12 +322,23 @@ def __init__(self, system, location,
         self.solar_position = None
 
     def __repr__(self):
-        return ('ModelChain for: ' + str(self.system) +
-                ' orientation_strategy: ' + str(self.orientation_strategy) +
-                ' clearsky_model: ' + str(self.clearsky_model) +
-                ' transposition_model: ' + str(self.transposition_model) +
-                ' solar_position_method: ' + str(self.solar_position_method) +
-                ' airmass_model: ' + str(self.airmass_model))
+        attrs = [
+            'orientation_strategy', 'clearsky_model', 'transposition_model',
+            'solar_position_method', 'airmass_model', 'dc_model', 'ac_model',
+            'aoi_model', 'spectral_model', 'temp_model', 'losses_model'
+            ]
+
+        def getmcattr(self, attr):
+            """needed to avoid recursion in property lookups"""
+            out = getattr(self, attr)
+            try:
+                out = out.__name__
+            except AttributeError:
+                pass
+            return out
+
+        return ('ModelChain: \n  ' + '\n  '.join(
+            (attr + ': ' + getmcattr(self, attr) for attr in attrs)))
 
     @property
     def orientation_strategy(self):