connections: print progress after completion

Since the progress indicators shows percent complete, we should do this *after* it is actually complete.

Author: dlech

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Changed
+- Print BLE download progress after chunk is complete instead of before.
+
 ## [1.0.0-alpha.2] - 2021-04-08
 ### Added
 - Check Pybricks protocol version when connecting to Bluetooth Low Energy devices.

pybricksdev/connections.py

@@ -749,8 +749,8 @@ async def run(self, py_path, wait=True, print_output=True):
             # Send the data chunk by chunk
             print(f"Downloading {len(mpy)} bytes in {len(chunks)} steps.")
             for i, chunk in enumerate(chunks):
-                print(f"Progress: {round((i + 1) / len(chunks) * 100)}%")
                 await self.send_block(chunk)
+                print(f"Progress: {round((i + 1) / len(chunks) * 100)}%")
         finally:
             self.loading = False