此代码来自https://github.com/Sapphirine/BITCOIN-PRICE-PREDICTION-USING-SENTIMENT-ANALYSIS。似乎关键是：
print(merged.columns.tolist())
['Time', 'Sentiment', 'Price']
print (data.columns.tolist())
['Unnamed: 0', 'Time', 'Sentiment', 'Price']
但我一直得到KeyError：'Sentiment'我也试过剥离空格。
from sklearn.preprocessing import MinMaxScaler
values = datag['Price'].values.reshape(-1,1)
sentiment = datag['Sentiment'].values.reshape(-1,1)
values = values.astype('float32')
sentiment = sentiment.astype('float32')
scaler = MinMaxScaler(feature_range=(0, 1))
scaled = scaler.fit_transform(values)
---------------------------------------------------------------------------
KeyError Traceback (most recent call last)
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
2441 try:
-> 2442 return self._engine.get_loc(key)
2443 except KeyError:
pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc (pandas\_libs\index.c:5280)()
pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc (pandas\_libs\index.c:5126)()
pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item (pandas\_libs\hashtable.c:20523)()
pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item (pandas\_libs\hashtable.c:20477)()
KeyError: 'Sentiment'
During handling of the above exception, another exception occurred:
KeyError Traceback (most recent call last)
<ipython-input-40-4b4b74484966> in <module>()
1 from sklearn.preprocessing import MinMaxScaler
2 values = datag['Price'].values.reshape(-1,1)
----> 3 sentiment = datag['Sentiment'].values.reshape(-1,1)
4 values = values.astype('float32')
5 sentiment = sentiment.astype('float32')
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\frame.py in __getitem__(self, key)
1962 return self._getitem_multilevel(key)
1963 else:
-> 1964 return self._getitem_column(key)
1965
1966 def _getitem_column(self, key):
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\frame.py in _getitem_column(self, key)
1969 # get column
1970 if self.columns.is_unique:
-> 1971 return self._get_item_cache(key)
1972
1973 # duplicate columns & possible reduce dimensionality
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\generic.py in _get_item_cache(self, item)
1643 res = cache.get(item)
1644 if res is None:
-> 1645 values = self._data.get(item)
1646 res = self._box_item_values(item, values)
1647 cache[item] = res
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\internals.py in get(self, item, fastpath)
3588
3589 if not isnull(item):
-> 3590 loc = self.items.get_loc(item)
3591 else:
3592 indexer = np.arange(len(self.items))[isnull(self.items)]
C:\Users\Ariel\Anaconda3\envs\tensorflow-gpu\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
2442 return self._engine.get_loc(key)
2443 except KeyError:
-> 2444 return self._engine.get_loc(self._maybe_cast_indexer(key))
2445
2446 indexer = self.get_indexer([key], method=method, tolerance=tolerance)
pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc (pandas\_libs\index.c:5280)()
pandas\_libs\index.pyx in pandas._libs.index.IndexEngine.get_loc (pandas\_libs\index.c:5126)()
pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item (pandas\_libs\hashtable.c:20523)()
pandas\_libs\hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item (pandas\_libs\hashtable.c:20477)()
KeyError: 'Sentiment'