在带有日期索引的 Pandas 中删除一行，python
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dropping a row in pandas with dates indexes, python
提问by user1504276
I'm trying to drop the last row in a dataframecreated by pandas in python and seem to be having trouble.
我试图将最后一行放在dataframe由 python 中的熊猫创建的a中，似乎遇到了问题。
index = DateRange('1/1/2000', periods=8)
df = DataFrame(randn(8, 3), index=index, columns=['A', 'B', 'C'])
I tried the drop method like this:
我尝试了这样的 drop 方法：
df.drop([shape(df)[0]-1], axis = 0)
but it keeps saying label not contained in the axis.
但它一直说标签不包含在轴中。
I also tried to drop by index name and it still doesn't seem to be working.
我还尝试按索引名称删除，但它似乎仍然不起作用。
Any advice would be appreciated. Thanks!!!
任何意见，将不胜感激。谢谢！！！
回答by eumiro
df.ix[:-1]
returns the original DataFrame with the last row removed.
返回删除最后一行的原始数据帧。
回答by modpy
Referencing the DataFrame directly to retrieve all but the last index worked for me.
直接引用 DataFrame 以检索除最后一个索引之外的所有内容对我有用。
df[:-1]
