Fix the first issue in #1010

Somehow it was still possible with lists to recurse.

test/completion/arrays.py

@@ -401,6 +401,18 @@ for x in [1] + ['']:
     #? int() str()
     x
 
+# -----------------
+# Potential Recursion Issues
+# -----------------
+class X():
+    def y(self):
+        self.a = [1]
+
+    def x(self):
+        self.a = list(self.a)
+        #? int()
+        self.a[0]
+
 # -----------------
 # For loops with attribute assignment.
 # -----------------