Make call of os.getppid() conditional: it is not available on Windows.

diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index a9512f3358a4cb50cb5b4157cabe51237f2eee69..f503f4dfb41c55443b6299fe964142fe6101968a 100644 (file)
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -79,7 +79,8 @@ To show the individual process IDs involved, here is an expanded example::
     def info(title):
         print(title)
         print('module name:', __name__)
-        print('parent process:', os.getppid())
+        if hasattr(os, 'getppid'):  # only available on Unix
+            print('parent process:', os.getppid())
         print('process id:', os.getpid())
 
     def f(name):