ch10: add function join_all

cjolowicz · cjolowicz · commit 9edf63165e83 · 2024-06-17T00:03:21.000+02:00
diff --git a/chapter10-using-types-for-safety-and-inspection/duck.py b/chapter10-using-types-for-safety-and-inspection/duck.py
@@ -0,0 +1,3 @@
+def join_all(joinables):
+    for task in joinables:
+        task.join()
