Update D2_of_3Day_DoneWithPython.md

MurphyWan · web-flow · commit de11f73b84c2 · 2017-09-05T21:20:18.000+08:00
diff --git a/D2_of_3Day_DoneWithPython.md b/D2_of_3Day_DoneWithPython.md
@@ -767,8 +767,8 @@ In [2] : np.savetxt("myfile.txt", a)
 
 * 示例文本文件data.txt： (Example text file data.txt:)
 
-|# Year|  Min temp.| Hax temp.|  
-|------|----------|-----------| 
+|Year|  Min temp.| Hax temp.|  
+|:---:|----------:|----------:| 
 |1990|     -1.5 |       25.3|       
 |1991|     -3.2|        21.2|
        
