Daniel sandbox

lira/parsers/rst.py

@@ -1,4 +1,5 @@
 import logging
+import importlib
 
 from docutils.frontend import OptionParser
 from docutils.nodes import Element
@@ -23,13 +24,16 @@ class DirectiveNode(Element):
     - content
     - options
     """
-
     tagname = "directive"
 
 
-def importable(value):
-    # TODO: check if value can be imported
-    return value
+def is_importable(value):
+    module_name, class_name = value.rsplit(".",1)
+    MyClass = getattr(importlib.import_module(module_name), class_name, ValueError)
+    if MyClass is ValueError:
+        raise ValueError
+    else:
+        return value
 
 
 class BaseDirective(Directive):
@@ -73,7 +77,7 @@ class TestBlockDirective(BaseDirective):
 
     option_spec = {
         "help": str,
-        "validator": importable,
+        "validator": is_importable,
     }
     has_content = True