fix bug when using encoding

Author: niushuaibing

P4.py

@@ -590,6 +590,9 @@ def run(self, *args, **kargs):
             setattr(self, k, v)
 
         flatArgs = self.__flatten(args)
+
+        if self.logger:
+            self.logger.info("p4 " + " ".join(flatArgs))
 
         # if encoding is set, translate to Bytes
         if hasattr(self,"encoding") and self.encoding and not self.encoding == 'raw':
@@ -601,9 +604,6 @@ def run(self, *args, **kargs):
                     result.append(s)
             flatArgs = result
 
-        if self.logger:
-            self.logger.info("p4 " + " ".join(flatArgs))
-        
         try:
             result = P4API.P4Adapter.run(self, *flatArgs)
         except P4Exception as e: