Copio metodo twilio de codificacion

services.py

@@ -218,14 +218,17 @@ class Mail(ServiceBase):
       if file == 'texto':
         objeto = open(filepath, "r")
         msg["Body"] = objeto.read()
+        objeto.close()
       else:
-        objeto = open(filepath, "rb")
-        adj = {"content":str(base64.b64encode(objeto.read())),
+        with open('attachment.pdf', 'rb') as f:
+          contenido = f.read()
+        f.close()
+        adj = {"content": base64.b64encode(data).decode(),
         "filename": file,
         "disposition": "attachment",
         "type": "application/pdf"}
         msg["Adjuntos"].append(adj)
-      objeto.close()
+
     return(msg)
 
   def ControlMail(self,stadomail,smtp):