From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Fri, 14 May 2021 06:07:31 +0000 (-0700)
Subject: Updated code example for asyncio.gather (GH-20604) (GH-26120)
X-Git-Tag: v3.9.6~103
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f38296feaa3b4d6f215088b21fd2452a4f5c2e4c;p=thirdparty%2FPython%2Fcpython.git

Updated code example for asyncio.gather (GH-20604) (GH-26120)

The previous example did not fully showcase the interest of using gather.

Here the example showcases "the result is an aggregate list of returned values".
(cherry picked from commit 56b8ea65d28bd865e2363e10e9f1c2ca3433ffc2)

Co-authored-by: josephernest <nouvellecollection@gmail.com>

Co-authored-by: josephernest <nouvellecollection@gmail.com>
---

diff --git a/Doc/library/asyncio-task.rst b/Doc/library/asyncio-task.rst
index 201678b0a3d5..87133e4cab30 100644
--- a/Doc/library/asyncio-task.rst
+++ b/Doc/library/asyncio-task.rst
@@ -360,32 +360,35 @@ Running Tasks Concurrently
       async def factorial(name, number):
           f = 1
           for i in range(2, number + 1):
-              print(f"Task {name}: Compute factorial({i})...")
+              print(f"Task {name}: Compute factorial({number}), currently i={i}...")
               await asyncio.sleep(1)
               f *= i
           print(f"Task {name}: factorial({number}) = {f}")
+          return f
 
       async def main():
           # Schedule three calls *concurrently*:
-          await asyncio.gather(
+          L = await asyncio.gather(
               factorial("A", 2),
               factorial("B", 3),
               factorial("C", 4),
           )
+          print(L)
 
       asyncio.run(main())
 
       # Expected output:
       #
-      #     Task A: Compute factorial(2)...
-      #     Task B: Compute factorial(2)...
-      #     Task C: Compute factorial(2)...
+      #     Task A: Compute factorial(2), currently i=2...
+      #     Task B: Compute factorial(3), currently i=2...
+      #     Task C: Compute factorial(4), currently i=2...
       #     Task A: factorial(2) = 2
-      #     Task B: Compute factorial(3)...
-      #     Task C: Compute factorial(3)...
+      #     Task B: Compute factorial(3), currently i=3...
+      #     Task C: Compute factorial(4), currently i=3...
       #     Task B: factorial(3) = 6
-      #     Task C: Compute factorial(4)...
+      #     Task C: Compute factorial(4), currently i=4...
       #     Task C: factorial(4) = 24
+      #     [2, 6, 24]
 
    .. note::
       If *return_exceptions* is False, cancelling gather() after it