Fix failing test with Py3.2 - Exceptions do not have msg

pycgtool/frame.py

@@ -200,7 +200,7 @@ class Frame:
             try:
                 import mdtraj
             except ImportError as e:
-                if "scipy" in e.msg:
+                if "scipy" in repr(e):
                     e.msg = "XTC output with MDTraj also requires Scipy"
                 else:
                     e.msg = "XTC output requires the module MDTraj (and probably Scipy)"

pycgtool/framereader.py

@@ -181,7 +181,7 @@ class FrameReaderMDTraj(FrameReader):
         try:
             import mdtraj
         except ImportError as e:
-            if "scipy" in e.msg:
+            if "scipy" in repr(e):
                 e.msg = "The MDTraj FrameReader also requires Scipy"
             else:
                 e.msg = "The MDTraj FrameReader requires the module MDTraj (and probably Scipy)"