fixings in MathicsSession

Author: mmatera

mathics/core/definitions.py

@@ -151,6 +151,7 @@ def load_pymathics_module(self, module, remove_on_quit=True):
                     if not var.context:
                         var.context = "Pymathics`"
                     symbol_name = instance.get_name()
+                    print("loading symbol name ", symbol_name )
                     builtins[symbol_name] = instance
                     builtins_by_module[loaded_module.__name__].append(instance)
                     newsymbols[symbol_name] = instance

mathics/session.py

@@ -11,15 +11,18 @@ def __init__(self, add_builtin=True, catch_interrupt=False, form="InputForm"):
         self.form = form
         self.last_result = None
 
-    def evaluate(self, str_expression, timeout = None, form=None):
+    def evaluate(self, str_expression, timeout=None, form=None):
         expr = parse(self.definitions, SingleLineFeeder(str_expression))
         if form is None:
             form = self.form
         self.last_result = expr.evaluate(self.evaluation)
         return self.last_result
 
-    def format_result(self, str_expression=None, timeout = None, form=None):
-        self.last_result
+    def format_result(self, str_expression=None, timeout=None, form=None):
+        if str_expression:
+            self.evaluate(str_expression, timeout = None, form=None)
+
+        res = self.last_result
         if form is None:
             form = self.form
-        return res.do_format(self.evaluation, form)
+        return res.format(self.evaluation, form)