Fix a recursion issue and add a test.

test/completion/classes.py

@@ -308,6 +308,20 @@ Recursion().a
 #?
 Recursion().b
 
+
+class X():
+    def __init__(self):
+        self.recursive = [1, 3]
+
+    def annoying(self):
+        self.recursive = [self.recursive[0]]
+
+    def recurse(self):
+        self.recursive = [self.recursive[1]]
+
+#? int()
+X().recursive[0]
+
 # -----------------
 # ducktyping
 # -----------------