fix for 3.8 python pull 13528 - 38exceptwjb (#333)

* fix for 3.8 python pull 13528 - https://github.com/python/cpython/pull/13528
* changes
* flake8

CHANGELOG.md

@@ -19,6 +19,7 @@ for setuptools_scm/PEP 440 reasons.
 - Binary wheels for ARM64/aarch64 also build for python 3.7.
 - See and remove plot directories from the UI and command line.
 - You can now specify the memory buffer in UI.
+- Optimized MPIR for Sandybridge and Ivybridge CPUs under Windows
 
 ### Changed
 - `chia start wallet-server` changed to `chia start wallet`, for consistency.
@@ -36,6 +37,7 @@ the blspy/bls-signatures library.
 - Fixed spelling error for "folder" on Plot tab.
 - Various node dependency security vulnerabilities have been fixed.
 - Request peers was not returning currently connected peers older than 1 day.
+- Fixed timeout exception inheritance changes under python 3.8 (pull 13528)
 
 ### Deprecated
 - Removed legacy scripts such as chia-stop-server, chia-restart-harvester, etc.
@@ -86,7 +88,6 @@ Graphical installer. Try `./chia -h` from
 in Windows or
 `/Applications/Chia.app/Contents/Resources/app.asar.unpacked/daemon` on MacOS.
 
-
 ### Changed
 - Minor changes have been made across the repositories to better support
 compiling on OpenBSD. HT @n1000.

src/full_node/full_node.py

@@ -379,7 +379,8 @@ class FullNode:
                     phr.wait(), timeout=sleep_interval,
                 )
                 break
-            except concurrent.futures.TimeoutError:
+            # https://github.com/python/cpython/pull/13528
+            except (concurrent.futures.TimeoutError, asyncio.TimeoutError):
                 total_time_slept += sleep_interval
                 self.log.warning("Did not receive desired header hashes")
 

src/full_node/sync_blocks_processor.py

@@ -64,7 +64,8 @@ class SyncBlocksProcessor:
                 try:
                     await asyncio.wait_for(future, timeout=self.SLEEP_INTERVAL)
                     break
-                except concurrent.futures.TimeoutError:
+                # https://github.com/python/cpython/pull/13528
+                except (concurrent.futures.TimeoutError, asyncio.TimeoutError):
                     try:
                         await future
                     except asyncio.CancelledError:

src/wallet/wallet_node.py

@@ -525,7 +525,8 @@ class WalletNode:
                         ].wait()
                         await asyncio.wait_for(aw, timeout=sleep_interval)
                         break
-                    except concurrent.futures.TimeoutError:
+                    # https://github.com/python/cpython/pull/13528
+                    except (concurrent.futures.TimeoutError, asyncio.TimeoutError):
                         total_time_slept += sleep_interval
                         self.log.info("Did not receive desired headers")
 
@@ -635,7 +636,8 @@ class WalletNode:
                 future = asyncio.gather(*awaitables, return_exceptions=True)
                 try:
                     await asyncio.wait_for(future, timeout=sleep_interval)
-                except concurrent.futures.TimeoutError:
+                # https://github.com/python/cpython/pull/13528
+                except (concurrent.futures.TimeoutError, asyncio.TimeoutError):
                     try:
                         await future
                     except asyncio.CancelledError: