Don't catch IndexError where we don't have to

jedi/evaluate/base_context.py

@@ -12,6 +12,8 @@ from jedi import debug
 from jedi._compatibility import Python3Method, zip_longest, unicode
 from jedi.parser_utils import clean_scope_docstring, get_doc_with_call_signature
 from jedi.common import BaseContextSet, BaseContext
+from jedi.evaluate.helpers import EvaluatorIndexError, EvaluatorTypeError, \
+    EvaluatorKeyError
 
 
 class Context(BaseContext):
@@ -128,11 +130,15 @@ class Context(BaseContext):
             else:
                 try:
                     result |= getitem(index)
-                except IndexError:
+                except EvaluatorIndexError:
                     result |= iterate_contexts(ContextSet(self))
-                except KeyError:
+                except EvaluatorKeyError:
                     # Must be a dict. Lists don't raise KeyErrors.
                     result |= self.dict_values()
+                except EvaluatorTypeError:
+                    # The type is wrong and therefore it makes no sense to do
+                    # anything anymore.
+                    result = NO_CONTEXTS
         return result
 
     def eval_node(self, node):