我需要在 python pandas 中为缺失的索引插入空值
I need to insert null values for missing index in python pandas
我有一个数据集
x text
1 one
2 two
4 four
5 five
7 seven
现在我想要输出为
x text
1 one
2 two
3 null
4 four
5 five
6 null
7 seven
使用reindex:
#if x is column
#df = df.set_index('x').reindex(np.arange(df.index.min(), df.index.max() + 1))
#if x is index
df = df.reindex(np.arange(df.index.min(), df.index.max() + 1))
print (df)
text
x
1 one
2 two
3 NaN
4 four
5 five
6 NaN
7 seven
我有一个数据集
x text
1 one
2 two
4 four
5 five
7 seven
现在我想要输出为
x text
1 one
2 two
3 null
4 four
5 five
6 null
7 seven
使用reindex:
#if x is column
#df = df.set_index('x').reindex(np.arange(df.index.min(), df.index.max() + 1))
#if x is index
df = df.reindex(np.arange(df.index.min(), df.index.max() + 1))
print (df)
text
x
1 one
2 two
3 NaN
4 four
5 five
6 NaN
7 seven