diff --git a/python/helpers/StdlibTypes.properties b/python/helpers/StdlibTypes.properties
index 7cffa26fb987..657e8f025db4 100644
--- a/python/helpers/StdlibTypes.properties
+++ b/python/helpers/StdlibTypes.properties
@@ -1,184 +1,6 @@
 # Python stdlib
 
 
-## 8.3. collections
-
-collections.Iterator.__init__ = \
-  :rtype: collections.Iterator of T \n\
-
-collections.Iterator.next = \
-  :rtype: T \n\
-
-
-## 9.2 math
-
-math.acos = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.acosh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.asin = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.asinh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.atan = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.atan2 = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.atanh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.ceil = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.copysign = \
-  :type x: float or numbers.Real \n\
-  :type y: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.cos = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.cosh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.degrees = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.erf = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.erfc = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.exp = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.expm1 = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.fabs = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.factorial = \
-  :type x: int or long \n\
-  :rtype: int \n\
-
-math.floor = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.fmod = \
-  :type x: float or numbers.Real \n\
-  :type y: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.frexp = \
-  :type x: float or numbers.Real \n\
-  :rtype: (float, int) \n\
-
-math.fsum = \
-  :type iterable: collections.Iterable of float \n\
-  :rtype: float \n\
-
-math.gamma = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.hypot = \
-  :type x: float or numbers.Real \n\
-  :type y: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.isinf = \
-  :type x: float or numbers.Real \n\
-  :rtype: bool \n\
-
-math.isnan = \
-  :type x: float or numbers.Real \n\
-  :rtype: bool \n\
-
-math.ldexp = \
-  :type x: float or numbers.Real \n\
-  :type y: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.lgamma = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.log = \
-  :type x: float or numbers.Real \n\
-  :type base: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.log10 = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.log1p = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.modf = \
-  :type x: float or numbers.Real \n\
-  :rtype: (float, float) \n\
-
-math.pow = \
-  :type x: float or numbers.Real \n\
-  :type y: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.radians = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.sin = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.sinh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.sqrt = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.tan = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.tanh = \
-  :type x: float or numbers.Real \n\
-  :rtype: float \n\
-
-math.trunc = \
-  :type x: float or numbers.Real \n\
-  :rtype: int \n\
-
-
 ## 9.4. decimal
 
 decimal.Decimal.as_tuple = \
diff --git a/python/src/com/jetbrains/python/psi/types/PyTypeParser.java b/python/src/com/jetbrains/python/psi/types/PyTypeParser.java
index 82da9b4a9713..e064ac31b83f 100644
--- a/python/src/com/jetbrains/python/psi/types/PyTypeParser.java
+++ b/python/src/com/jetbrains/python/psi/types/PyTypeParser.java
@@ -24,6 +24,7 @@ import com.intellij.psi.PsiFile;
 import com.intellij.util.Function;
 import com.intellij.util.containers.hash.HashMap;
 import com.jetbrains.python.PyNames;
+import com.jetbrains.python.codeInsight.userSkeletons.PyUserSkeletonsUtil;
 import com.jetbrains.python.psi.*;
 import com.jetbrains.python.psi.impl.PyBuiltinCache;
 import com.intellij.psi.util.QualifiedName;
@@ -522,12 +523,23 @@ public class PyTypeParser {
     private ParseResult fromClassNameIndex(@NotNull Token<PyElementType> token) {
       final Collection<PyClass> classes = PyClassNameIndex.find(token.getText().toString(), myAnchor.getProject(), true);
       if (classes.size() == 1) {
-        final PyClassTypeImpl type = new PyClassTypeImpl(classes.iterator().next(), false);
-        type.assertValid("PyClassNameIndex.find().iterator().next()");
-        return new ParseResult(type, token.getRange());
+        return parseResultFromClass(token, classes.iterator().next());
+      }
+      for (PyClass cls : classes) {
+        final PsiFile file = cls.getContainingFile();
+        if (file != null && !PyUserSkeletonsUtil.isUnderUserSkeletonsDirectory(file)) {
+          return parseResultFromClass(token, cls);
+        }
       }
       return null;
     }
+
+    @NotNull
+    private static ParseResult parseResultFromClass(@NotNull Token<PyElementType> token, @NotNull PyClass cls) {
+      final PyClassTypeImpl type = new PyClassTypeImpl(cls, false);
+      type.assertValid("PyClassNameIndex.find().iterator()");
+      return new ParseResult(type, token.getRange());
+    }
   }
 
   private static FunctionalParser<Token<PyElementType>, PyElementType> op(@Nullable String text) {
diff --git a/python/testSrc/com/jetbrains/python/PyTypeParserTest.java b/python/testSrc/com/jetbrains/python/PyTypeParserTest.java
index aa5acf1efb3c..30dc43404a3c 100644
--- a/python/testSrc/com/jetbrains/python/PyTypeParserTest.java
+++ b/python/testSrc/com/jetbrains/python/PyTypeParserTest.java
@@ -15,6 +15,8 @@
  */
 package com.jetbrains.python;
 
+import com.intellij.psi.PsiFile;
+import com.jetbrains.python.documentation.PythonDocumentationProvider;
 import com.jetbrains.python.fixtures.PyTestCase;
 import com.jetbrains.python.psi.types.*;
 
@@ -34,7 +36,7 @@ public class PyTypeParserTest extends PyTestCase {
 
   private static void assertClassType(PyType type, final String name) {
     assertNotNull(type);
-    assertEquals(name, ((PyClassType) type).getPyClass().getName());
+    assertEquals(name, ((PyClassType)type).getPyClass().getName());
   }
 
   public void testTupleType() {
@@ -276,4 +278,21 @@ public class PyTypeParserTest extends PyTestCase {
     assertNotNull(parameterTypes);
     assertEquals(0, parameterTypes.size());
   }
+
+  public void testQualifiedUserSkeletonsClass() {
+    doTest("Iterator[int]", "collections.Iterator[int]");
+  }
+
+  public void testUnqualifiedUserSkeletonsClass() {
+    doTest("Iterator[int]", "Iterator[int]");
+  }
+
+  private void doTest(final String expectedType, final String text) {
+    myFixture.configureByFile("typeParser/typeParser.py");
+    final PsiFile file = myFixture.getFile();
+    final PyType type = PyTypeParser.getTypeByName(file, text);
+    TypeEvalContext context = TypeEvalContext.userInitiated(file).withTracing();
+    final String actualType = PythonDocumentationProvider.getTypeName(type, context);
+    assertEquals(expectedType, actualType);
+  }
 }
diff --git a/python/testSrc/com/jetbrains/python/PyTypeTest.java b/python/testSrc/com/jetbrains/python/PyTypeTest.java
index 7969d395dd89..cfa29662898a 100644
--- a/python/testSrc/com/jetbrains/python/PyTypeTest.java
+++ b/python/testSrc/com/jetbrains/python/PyTypeTest.java
@@ -799,6 +799,12 @@ public class PyTypeTest extends PyTestCase {
            "expr = c.foo\n");
   }
 
+  public void testIterNext() {
+    doTest("int",
+           "xs = [1, 2, 3]\n" +
+           "expr = iter(xs).next()\n");
+  }
+
   private static TypeEvalContext getTypeEvalContext(@NotNull PyExpression element) {
     return TypeEvalContext.userInitiated(element.getContainingFile()).withTracing();
   }