Fill out the remaining examples.

python · ericsnowcurrently · Sep 12, 2017 · Sep 12, 2017 · Sep 12, 2017 · Sep 12, 2017
commit 2c95da229f99507c84e04940f343ca8c7f1f6fab
diff --git a/pep-0554.rst b/pep-0554.rst
@@ -303,12 +303,55 @@ Synchronize using a FIFO
 Sharing a file descriptor
 -------------------------
 
-TBD
+::
+
+   interp = interpreters.create()
+   writer = interp.add_recv_fifo('spam')
+   reader = interp.add_send_fifo('done')
+   def run():
+       interp.run("""if True:
+           import interpreters
+           interp = interpreters.get_current()
+           reader = interp.get_fifo('spam')
+           writer = interp.get_fifo('done')
+           fd = reader.pop()
+           for line in os.fdopen(fd):
+               print(line)
+           writer.push(None)
+           """)
+   t = threading.Thread(target=run)
+   t.start()
+   with open('spamspamspam') as infile:
+       writer.push(infile.fileno())
+       reader.pop()
 
 Passing objects via pickle
 --------------------------
 
-TBD
+::
+
+   interp = interpreters.create()
+   writer = interp.add_recv_fifo('spam')
+   interp.run("""if True:
+       import pickle
+       import interpreters
+       interp = interpreters.get_current()
+       reader = interp.get_fifo('spam')
+       """)
+   def run():
+       interp.run("""if True:
+           data = reader.pop()
+           while data is not None:
+               obj = pickle.loads(data)
+               do_something(obj)
+               data = reader.pop()
+           """)
+   t = threading.Thread(target=run)
+   t.start()
+   for obj in input:
+       data = pickle.dumps(obj)
+       writer.push(data)
+   writer.push(None)
 
 
 Rationale