Make iterable checker skip classes that are inferred to be abstract

--HG--
branch : fix-685

1 files changed, 11 insertions, 0 deletions

diff --git a/pylint/checkers/utils.py b/pylint/checkers/utils.py
index 443e32d3e..8873d0e1b 100644
--- a/pylint/checkers/utils.py
+++ b/pylint/checkers/utils.py
@@ -573,6 +573,17 @@ def node_ignores_exception(node, exception):
     return False
 
 
+def class_is_abstract(node):
+    """return true if the given class node should be considered as an abstract
+    class
+    """
+    for method in node.methods():
+        if method.parent.frame() is node:
+            if method.is_abstract(pass_is_abstract=False):
+                return True
+    return False
+
+
 # TODO(cpopa): deprecate these or leave them as aliases?
 safe_infer = astroid.helpers.safe_infer
 has_known_bases = astroid.helpers.has_known_bases