From e0a3b8187799a22b373e826573c0ce5e799e4d04 Mon Sep 17 00:00:00 2001
From: Ivan Kravets <me@ikravets.com>
Date: Sat, 3 Sep 2022 12:08:17 +0300
Subject: [PATCH] Fixed "UnboundLocalError: local variable 'port' referenced
 before assignment" // Resolve #4407

---
 platformio/device/finder.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platformio/device/finder.py b/platformio/device/finder.py
index c93b9a90..0ef1b118 100644
--- a/platformio/device/finder.py
+++ b/platformio/device/finder.py
@@ -149,7 +149,7 @@ class SerialPortFinder:
             port = self._reveal_device_port(device)
 
         # pick the best PID:VID USB device
-        best_port = None
+        port = best_port = None
         for item in list_serial_ports():
             if self.ensure_ready and not is_serial_port_ready(item["port"]):
                 continue