Fix 'Using open without explicitly specifying an encoding'

In preparation for running pylint on more code.

(cherry picked from commit 38a47d9f7c9daba9c83e71ec8fc4ff8e90afd569)

diff --git a/bin/tests/system/tcp/ans6/ans.py b/bin/tests/system/tcp/ans6/ans.py
index a9df8b7df7dc8d41d9ad29915999659e00fa3461..1617f31ddcd9bb9eb55e14a5274c9cc2626b58ce 100644 (file)
--- a/bin/tests/system/tcp/ans6/ans.py
+++ b/bin/tests/system/tcp/ans6/ans.py
@@ -118,7 +118,7 @@ def main():
 
     signal.signal(signal.SIGTERM, sigterm)
 
-    with open("ans.pid", "w") as pidfile:
+    with open("ans.pid", "w", encoding="utf-8") as pidfile:
         print(os.getpid(), file=pidfile)
 
     listenip = "10.53.0.6"