Merge pull request REMitchell#4 from muxuezi/patch-1

Update 5-storeWikiLinks.py

Author: REMitchell

chapter5/5-storeWikiLinks.py

@@ -1,5 +1,6 @@
 from urllib.request import urlopen
 from bs4 import BeautifulSoup
+import re
 import datetime
 import random
 import pymysql
@@ -30,4 +31,4 @@ def getLinks(articleUrl):
          links = getLinks(newArticle)
 finally:
     cur.close()
-    conn.close()
+    conn.close()