Fix __write_element function for objects inputs/outputs

src/jflow/component.py

@@ -595,7 +595,7 @@ class Component(object):
                      collect=collect, local=local, arguments=arguments)
         else:
             py_function(inputs=new_inputs, outputs=new_outputs, arguments=arguments, includes=includes+includes_in)
-        
+
         self.__write_trace(function.__name__, inputs, outputs, arguments, cmd_format, map, "PythonFunction")
         
     def add_shell_execution(self, source, inputs=[], outputs=[], arguments=[], includes=[], 
@@ -635,12 +635,11 @@ class Component(object):
                 if isinstance(element[0], list):
                     for i in range(len(element)) : 
                         to_write+="List"+str(i+1)+": \n"
-                        to_write+="\n".join(element[i])+"\n"
+                        to_write+="\n".join([str(x) for x in element[i]])+"\n"
                 else : 
-                    to_write+="\n".join(element)+"\n"
+                    to_write+="\n".join([str(x) for x in element])+"\n"
         else :
-            to_write+= element+"\n"
+            to_write+= str(element)+"\n"
         if to_write != "" :
             fh.write(title+" :\n")
             fh.write(to_write)
-            
\ No newline at end of file