Smarter error checking

Author: jdlangs

.travis.yml

@@ -17,8 +17,6 @@ before_script:
   - sleep 5
   - python test/echonode.py &
   - sleep 5
-  - julia -e 'Pkg.add("PyCall")'
-  - julia -e 'Pkg.checkout("PyCall")'
 after_success:
   - julia -e 'cd(Pkg.dir("RobotOS")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
 after_script:

src/RobotOS.jl

@@ -4,8 +4,11 @@ using PyCall
 const __rospy__ = try
     pyimport("rospy")
 catch ex
-    if ex.val[:args][1] == "No module named rospy"
+    if (isa(ex, PyCall.PyError) &&
+        pycall(pybuiltin("str"), PyAny, ex.val) == "No module named rospy")
         error("rospy not found!\nHas an environment setup script been run?")
+    else
+        rethrow(ex)
     end
 end