pandas：无法使用 Timestamp 的这些索引器 [2016-08-01 00:00:00] 对 DatetimeIndex 进行位置索引
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pandas: cannot do positional indexing on DatetimeIndex with these indexers [2016-08-01 00:00:00] of Timestamp
提问by Homunculus Reticulli
I a newbie using pandas, I am trying to access my (date indexed) dataframe dfusing code similar to this:
我是一个使用 Pandas 的新手，我正在尝试df使用与此类似的代码访问我的（日期索引）数据框：
for idx, row in df.iterrows():
if idx < startrow:
continue
col1_data = df.iloc[idx]['col1']
I get the following error:
我收到以下错误：
cannot do positional indexing on <class 'pandas.core.indexes.datetimes.DatetimeIndex'> with these indexers [2016-08-01 00:00:00] of <class 'pandas._libs.tslib.Timestamp'>
How do I fix this ?
我该如何解决 ？
回答by Psidom
The ilocneeds to be loc, as the former is integer-location based indexing; To select rows by labels (or the actual index as is idx) you need loc:
该iloc需求是loc，因为前者是整数，基于位置的索引; 要按标签（或原样的实际索引idx）选择行，您需要loc：
col1_data = df.loc[idx]['col1']
