Issue #25523: Further a-to-an corrections new in 3.5

Lib/concurrent/futures/process.py

@@ -456,7 +456,7 @@ class ProcessPoolExecutor(_base.Executor):
     submit.__doc__ = _base.Executor.submit.__doc__
 
     def map(self, fn, *iterables, timeout=None, chunksize=1):
-        """Returns a iterator equivalent to map(fn, iter).
+        """Returns an iterator equivalent to map(fn, iter).
 
         Args:
             fn: A callable that will take as many arguments as there are

Lib/signal.py

@@ -34,7 +34,7 @@ def _int_to_enum(value, enum_klass):
 
 def _enum_to_int(value):
     """Convert an IntEnum member to a numeric value.
-    If it's not a IntEnum member return the value itself.
+    If it's not an IntEnum member return the value itself.
     """
     try:
         return int(value)

Lib/unittest/test/test_discovery.py

@@ -255,12 +255,12 @@ class TestDiscovery(unittest.TestCase):
         self.addCleanup(sys.path.remove, abspath('/foo'))
 
         # Test data: we expect the following:
-        # a listdir to find our package, and a isfile and isdir check on it.
+        # a listdir to find our package, and isfile and isdir checks on it.
         # a module-from-name call to turn that into a module
         # followed by load_tests.
         # then our load_tests will call discover() which is messy
         # but that finally chains into find_tests again for the child dir -
-        # which is why we don't have a infinite loop.
+        # which is why we don't have an infinite loop.
         # We expect to see:
         # the module load tests for both package and plain module called,
         # and the plain module result nested by the package module load_tests