python · vstinner · Aug 10, 2017 · Aug 10, 2017
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
@@ -78,7 +78,6 @@ def setUp(self):
    def tearDown(self):
        self._warnings_manager.__exit__(None, None, None)

-
    def nameCheck(self, name, dir, pre, suf):
        (ndir, nbase) = os.path.split(name)
        npre  = nbase[:len(pre)]
@@ -184,12 +183,15 @@ def test_process_awareness(self):
        try:
            pid = os.fork()
            if not pid:
+                # child process
                os.close(read_fd)
                os.write(write_fd, next(self.r).encode("ascii"))
                os.close(write_fd)
                # bypass the normal exit handlers- leave those to
                # the parent.
                os._exit(0)
+
+            # parent process
            parent_value = next(self.r)
            child_value = os.read(read_fd, len(parent_value)).decode("ascii")
        finally:
@@ -200,6 +202,10 @@ def test_process_awareness(self):
                    os.kill(pid, signal.SIGKILL)
                except OSError:
                    pass
+
+                # Read the process exit status to avoid zombie process
+                os.waitpid(pid, 0)
+
            os.close(read_fd)
            os.close(write_fd)
        self.assertNotEqual(child_value, parent_value)