Index: Lib/inspect.py
===================================================================
--- Lib/inspect.py	(revision 86595)
+++ Lib/inspect.py	(working copy)
@@ -1128,3 +1128,26 @@
     if default is not _sentinel:
         return default
     raise AttributeError(attr)
+
+
+GEN_CREATED = 1
+GEN_RUNNING = 2
+GEN_SUSPENDED = 3
+GEN_CLOSED = 4
+
+def getgeneratorstate(generator):
+    """Get current state of a generator-iterator.
+
+    Possible states are:
+      GEN_CREATED: Waiting to start execution.
+      GEN_RUNNING: Currently being executed by the interpreter.
+      GEN_SUSPENDED: Currently suspended at a yield expression.
+      GEN_CLOSED: Execution has completed.
+    """
+    if generator.gi_running:
+        return GEN_RUNNING
+    if generator.gi_frame is None:
+        return GEN_CLOSED
+    if generator.gi_frame.f_lasti == -1:
+        return GEN_CREATED
+    return GEN_SUSPENDED
Index: Lib/test/test_inspect.py
===================================================================
--- Lib/test/test_inspect.py	(revision 86595)
+++ Lib/test/test_inspect.py	(working copy)
@@ -887,12 +887,46 @@
         self.assertEqual(inspect.getattr_static(Something, 'foo'), 3)
 
 
+class TestGetGeneratorState(unittest.TestCase):
+
+    def setUp(self):
+        def number_generator():
+            for number in range(5):
+                yield number
+        self.generator = number_generator()
+
+    def testCreated(self):
+        self.assertEqual(inspect.getgeneratorstate(self.generator), inspect.GEN_CREATED)
+    
+    def testSuspended(self):
+        next(self.generator)
+        self.assertEqual(inspect.getgeneratorstate(self.generator), inspect.GEN_SUSPENDED)
+    
+    def testClosed(self):
+        for i in self.generator:
+            pass
+        self.assertEqual(inspect.getgeneratorstate(self.generator), inspect.GEN_CLOSED)
+    
+    def testRunning(self):
+        # As mentioned on issue #10220, checking for the RUNNING state is a bit tricky.
+        # The following generator checks for this between yield's, but to do so it must receive
+        # a self reference through a "send" call.
+        def running_check_generator():
+            for number in range(5):
+                generator_self = yield number
+                self.assertEqual(inspect.getgeneratorstate(generator_self), inspect.GEN_RUNNING)
+        self.generator = running_check_generator()
+        next(self.generator)
+        # Sends a reference to the generator itself, in order to assert its state value.
+        self.generator.send(self.generator)
+
+
 def test_main():
     run_unittest(
         TestDecorators, TestRetrievingSourceCode, TestOneliners, TestBuggyCases,
         TestInterpreterStack, TestClassesAndFunctions, TestPredicates,
         TestGetcallargsFunctions, TestGetcallargsMethods,
-        TestGetcallargsUnboundMethods, TestGetattrStatic
+        TestGetcallargsUnboundMethods, TestGetattrStatic, TestGetGeneratorState
     )
 
 if __name__ == "__main__":