Fix thread_name_prefix for InterpreterPoolExecutor

Author: aisk

Lib/concurrent/futures/interpreter.py

@@ -118,5 +118,7 @@ def __init__(self, max_workers=None, thread_name_prefix='',
                 each worker interpreter.
             initargs: A tuple of arguments to pass to the initializer.
         """
+        thread_name_prefix = (thread_name_prefix or
+                              (f"InterpreterPoolExecutor-{self._counter()}"))
         super().__init__(max_workers, thread_name_prefix,
                          initializer, initargs)