我正在尝试切片一个时间序列，我可以这样完美地做到这一点：
subseries = series['2015-07-07 01:00:00':'2015-07-07 03:30:00'] .
但是以下代码不起作用
def GetDatetime():
Y = int(raw_input("Year "))
M = int(raw_input("Month "))
D = int(raw_input("Day "))
d = datetime.datetime(Y, M, D) #creates a datetime object
return d
filePath = "pathtofile.csv"
series = pd.read_csv(str(filePath), index_col='date')
series.index = pd.to_datetime(series.index, unit='s')
d = GetDatetime()
f = GetDatetime()
subseries = series[d:f]
最后一行生成此错误：
Traceback (most recent call last):
File "dontgivemeerrorsbrasommek.py", line 37, in <module>
brasla7nina= df[d:f]
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/frame.py", line 1952, in __getitem__
indexer = convert_to_index_sliceable(self, key)
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexing.py", line 1896, in convert_to_index_sliceable
return idx._convert_slice_indexer(key, kind='getitem')
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexes/base.py", line 1407, in _convert_slice_indexer
indexer = self.slice_indexer(start, stop, step, kind=kind)
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexes/datetimes.py", line 1515, in slice_indexer
return Index.slice_indexer(self, start, end, step, kind=kind)
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexes/base.py", line 3350, in slice_indexer
kind=kind)
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexes/base.py", line 3538, in slice_locs
start_slice = self.get_slice_bound(start, 'left', kind)
File "/usr/local/lib/python2.7/dist-packages/pandas-0.20.2-py2.7-linux-x86_64.egg/pandas/core/indexes/base.py", line 3487, in get_slice_bound
raise err
KeyError: 1435802520000000000
我认为这是一个时间戳转换问题，所以我尝试了以下内容，但仍然不起作用：
d3 = pandas.Timestamp(datetime(Y, M, D, H, m))
d2 = pandas.to_datetime(d)
您的帮助将不胜感激，谢谢。 :)
def GetDatetime()函数返回值更改为：
return str(d)
这将返回时间序列能够处理的日期时间字符串。
如果我正确理解您的代码，当您执行此操作时：
subseries = series['2015-07-07 01:00:00':'2015-07-07 03:30:00']
您正在从两个字符串中切series(顺便说一句，这很令人困惑，因为有一个 pandas 数据类型Series(。
如果这有效，那么您需要从subseries= df[d:f]那里得到的是d，f是字符串。
您可以通过调用 DateTime 方法.strftime()例如：
d= GetDatetime().strftime('%Y-%m-%d 00:00:00')
f= GetDatetime().strftime('%Y-%m-%d 00:00:00')