用空格替换系列数据

Question

如何从列中删除重复值？

附加预期输出（以excel格式）

State列有4个值为“West Bengal”。只应显示第一个。

Answer 1

使用loc和shift检测行何时更改值，然后我们可以使用布尔掩码将这些行设置为空白：

In [52]:

df = pd.DataFrame({'state':['West Bengal','West Bengal','West Bengal', 'East','East'] , 'amount':[14,25,36,47,58]}) 
df
Out[52]:
   amount        state
0      14  West Bengal
1      25  West Bengal
2      36  West Bengal
3      47         East
4      58         East
In [54]:

df.loc[df['state'] == df['state'].shift(), 'state'] = ''
df
Out[54]:
  amount        state
0     14  West Bengal
1                    
2                    
3     47         East
4