enhance _check_running() ValuError output in Pool class

2020-11-11 10:22:54 +08:00 · 2020-11-11 10:22:54 +08:00 · 2f74b034fb
parent 95ce7cd0a6
commit 2f74b034fb
1 changed files with 1 additions and 1 deletions
--- a/Lib/multiprocessing/pool.py
+++ b/Lib/multiprocessing/pool.py
@ -347,7 +347,7 @@ class Pool(object):

    def _check_running(self):
        if self._state != RUN:
-            raise ValueError("Pool not running")
+            raise ValueError("Pool not running because self._state is {}".format(self._state))

    def apply(self, func, args=(), kwds={}):
        '''