Raise ``AttributeInferenceError`` when ``getattr()`` receives an empty name

If `Module.getattr` received an empty string (as a result of inference for example),
`astroid` would have returned the same Module again, which leads to false positives
in pylint, since the expected output was of a different type.

Rather than allowing empty names to pass through `getattr()`, we simply raise
an error earlier.

Close PyCQA/pylint#2991

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 2e712db2..7485f123 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,10 @@ Release Date: TBA
 
   Close PyCQA/pylint#3417
 
+* Raise ``AttributeInferenceError`` when ``getattr()`` receives an empty name
+
+  Close PyCQA/pylint#2991
+
 * ``NodeNG.bool_value()`` gained an optional ``context`` parameter
 
   We need to pass an inference context downstream when inferring the boolean