[testing] testing the error messages for plotting

GPy/plotting/__init__.py

@@ -31,8 +31,7 @@ def change_plotting_library(lib):
         import warnings
         warnings.warn(ImportWarning("You spevified {} in your configuration, but is not available. Install newest version of {} for plotting".format(lib, lib)))
 
-from ConfigParser import NoOptionError
-from ..util.config import config
+from ..util.config import config, NoOptionError
 try:
     lib = config.get('plotting', 'library')
     change_plotting_library(lib)

GPy/util/config.py

@@ -6,10 +6,12 @@ try:
     #Attempt Python 2 ConfigParser setup
     import ConfigParser
     config = ConfigParser.ConfigParser()
+    from ConfigParser import NoOptionError
 except ImportError:
     #Attempt Python 3 ConfigParser setup
     import configparser
     config = configparser.ConfigParser()
+    from configparser import NoOptionError
     
 
 # This is the default configuration file that always needs to be present.