我在练习从谷歌财经股市数据导入熊猫数据帧列中的数据时,Python的错误:调用从熊猫数据框中
import pandas as pd
from pandas import Series
path = 'http://www.google.com/finance/historical?cid=542029859096076&startdate=Sep+22%2C+2001&enddate=Sep+20%2C+2016&num=30&ei=3HvhV4n3D8XGmAGp4q74Ag&output=csv'
df = pd.read_csv(path)
到目前为止好,和DF也显示了完整的数据集,我需要。
但是,调用特定列的时候,像
df['Date']
的Python示出下面的错误代码:
Traceback (most recent call last):
File "<ipython-input-31-cb486dd31fbc>", line 1, in <module>
df['Date']
File "/Users/Username/anaconda/lib/python3.5/site-packages/pandas/core/frame.py", line 1997, in __getitem__
return self._getitem_column(key)
File "/Users/Username/anaconda/lib/python3.5/site-packages/pandas/core/frame.py", line 2004, in _getitem_column
return self._get_item_cache(key)
File "/Users/Username/anaconda/lib/python3.5/site-packages/pandas/core/generic.py", line 1350, in _get_item_cache
values = self._data.get(item)
File "/Users/Username/anaconda/lib/python3.5/site-packages/pandas/core/internals.py", line 3290, in get
loc = self.items.get_loc(item)
File "/Users/Username/anaconda/lib/python3.5/site-packages/pandas/indexes/base.py", line 1947, in get_loc
return self._engine.get_loc(self._maybe_cast_indexer(key))
File "pandas/index.pyx", line 137, in pandas.index.IndexEngine.get_loc (pandas/index.c:4154)
File "pandas/index.pyx", line 159, in pandas.index.IndexEngine.get_loc (pandas/index.c:4018)
File "pandas/hashtable.pyx", line 675, in pandas.hashtable.PyObjectHashTable.get_item (pandas/hashtable.c:12368)
File "pandas/hashtable.pyx", line 683, in pandas.hashtable.PyObjectHashTable.get_item (pandas/hashtable.c:12322)
KeyError: 'Date'
在另一方面,其它的塔,例如DF [ '高']原来没问题。无论如何,我可以解决这个问题吗?
当我尝试它工作正常,正确分析。 – ayhan
(基于MaxU的回答,它可能正常工作,因为我使用Python 3.5)。 – ayhan
@ayhan,did'df ['Date']'为你工作吗?它不应该也在Python 3.5下工作... – MaxU