Explicitly specify encoding when opening text files in Python code

share/qt/extract_strings_qt.py

@@ -63,7 +63,7 @@ child = Popen([XGETTEXT,'--output=-','-n','--keyword=_'] + files, stdout=PIPE)
 
 messages = parse_po(out.decode('utf-8'))
 
-f = open(OUT_CPP, 'w')
+f = open(OUT_CPP, 'w', encoding="utf8")
 f.write("""
 
 #include <QtGlobal>