From aabbdb4df5464cde1cc37e98772260c8a25997cc Mon Sep 17 00:00:00 2001
From: yh <poemsmileyh@gmail.com>
Date: Fri, 17 May 2019 14:01:40 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0vocab=E7=9A=84clear=E6=96=B9?=
 =?UTF-8?q?=E6=B3=95?=
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---
 fastNLP/core/vocabulary.py | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/fastNLP/core/vocabulary.py b/fastNLP/core/vocabulary.py
index 03759194..3d9598a3 100644
--- a/fastNLP/core/vocabulary.py
+++ b/fastNLP/core/vocabulary.py
@@ -322,7 +322,18 @@ class Vocabulary(object):
         :return str word: the word
         """
         return self.idx2word[idx]
-    
+
+    def clear(self):
+        """
+        删除Vocabulary中的词表数据。相当于重新初始化一下。
+
+        :return:
+        """
+        self.word_count.clear()
+        self.word2idx = None
+        self.idx2word = None
+        self.rebuild = True
+
     def __getstate__(self):
         """Use to prepare data for pickle.