Python Pandas - 将多列组合成一个交错列(Python Pandas - Combining Multiple Columns into one Staggered Column)

 你如何将多列组合成一列交错列？ 例如，如果我有数据： 
 
  Column 1 Column 2
0        A        E
1        B        F
2        C        G
3        D        H
 
 我想要它的形式： 
 
  Column 1 
0        A       
1        E       
2        B       
3        F       
4        C       
5        G       
6        D       
7        H     
 
 什么是一个好的，矢量化的pythonic方式去做这件事？ 我可以做一些df.apply（）破解，但我敢打赌有一个更好的方法。 该应用程序将时间序列数据的多个维度放入ML应用程序的单个数据流中。 

How do you combine multiple columns into one staggered column? For example, if I have data:
 
  Column 1 Column 2
0        A        E
1        B        F
2        C        G
3        D        H
 
And I want it in the form:
 
  Column 1 
0        A       
1        E       
2        B       
3        F       
4        C       
5        G       
6        D       
7        H     
 
What is a good, vectorized pythonic way to go about doing this? I could probably do some sort of df.apply() hack but I'm betting there is a better way. The application is putting multiple dimensions of time series data into a single stream for ML applications. 

原文：https://stackoverflow.com/questions/38663711