fixed pretty_name bug in operators, disabled verbosity and debug during...

fixed pretty_name bug in operators, disabled verbosity and debug during continuous integration tests

ci/scripts/test.sh

@@ -42,6 +42,8 @@ if [ "$HAS_CACHE_DIR" = true ]; then
 fi
 
 export PYTHONPATH="$INSTALL_DIR/lib/python2.7/site-packages:$PYTHONPATH"
+export HYSOP_VERBOSE=0
+export HYSOP_DEBUG=0
 python -c 'import hysop; print hysop'
 
 # long backend dependent tests

hysop/core/graph/computational_node.py

@@ -82,6 +82,8 @@ class ComputationalGraphNode(OperatorBase):
         ----------
         name: str 
             name of this node (used for printing and display purpose).
+        pretty_name: str 
+            Pretty name of this node (used for printing and display purpose).
         input_fields: dict   
             input fields as a dictionnary (see Notes).
         output_fields: dict
@@ -106,7 +108,8 @@ class ComputationalGraphNode(OperatorBase):
         -----
         For the input and output fields, the keys of the dicts have to be of 
         type :class:`hysop.fields.continuous_field.Field`.
-        and the values should consist of :class:`hysop.topology.topology_descriptor.TopologyDescriptors` instances
+        and the values should consist of 
+        :class:`hysop.topology.topology_descriptor.TopologyDescriptors` instances
         ie. an already defined topology or a topology descriptor.
 
         For input and output parameters, the keys of the dicts can be arbitrary names that 
@@ -146,10 +149,13 @@ class ComputationalGraphNode(OperatorBase):
         output_fields = first_not_None(output_fields, {})
         input_params  = first_not_None(input_params,  {})
         output_params = first_not_None(output_params, {})
-        method        = method or {}
-        name          = name or self.__class__.__name__
+        method        = first_not_None(method, {})
+        name          = first_not_None(name, self.__class__.__name__)
         pretty_name   = first_not_None(pretty_name, name)
         
+        if isinstance(pretty_name, unicode):
+            pretty_name = pretty_name.encode('utf-8')
+        
         if not isinstance(name, str):
             msg='name is not a string but a {}.'
             raise ValueError(msg.format(name.__class__))