diff --git a/README.md b/README.md
index 646a2d3..5928d53 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ rm ud-treebanks-v2.2.tgz
 
 ## Prepare Embeddings
 ### fastText
-The fastText embeddings can be downloaded on the Facebook fastText [repo](https://github.com/facebookresearch/fastText/blob/master/docs/pretrained-vectors.md) (Note that there are different versions of pretrained fastText embeddings in the fastText repo, but the embeddings must be downloaded from the given link since the alignment matrices (from [here](https://github.com/Babylonpartners/fastText_multilingual)) we used are learned on this specific version of fastText embeddings. Download the fastText model `bin` file and put it into the `fastText_data` folder.
+The fastText embeddings can be downloaded in the Facebook fastText [repo](https://github.com/facebookresearch/fastText/blob/master/docs/pretrained-vectors.md) (Note that there are different versions of pretrained fastText embeddings in the fastText repo, but the embeddings must be downloaded from the given link since the alignment matrices (from [here](https://github.com/Babylonpartners/fastText_multilingual)) we used are learned on this specific version of fastText embeddings). Download the fastText model `bin` file and put it into the `fastText_data` folder.
 
 Take English language as an example to preprocess the fastText embeddings:
 ```
diff --git a/modules/logger.py b/modules/logger.py
new file mode 100644
index 0000000..dd25ef9
--- /dev/null
+++ b/modules/logger.py
@@ -0,0 +1,26 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+# vim:fenc=utf-8
+#
+# Copyright © 2019-05-29 Junxian <He>
+#
+# Distributed under terms of the MIT license.
+
+"""
+Logger class files
+"""
+import sys
+
+class Logger(object):
+  def __init__(self, output_file):
+    self.terminal = sys.stdout
+    self.log = open(output_file, "w")
+
+  def write(self, message):
+    print(message, end="", file=self.terminal, flush=True)
+    print(message, end="", file=self.log, flush=True)
+
+  def flush(self):
+    self.terminal.flush()
+    self.log.flush()
+