<p>我确实遇到了一个按键错误,以前从未见过这种情况。有人能帮我解决这个问题吗?提前非常感谢</p>
<p>输出:</p>
<pre><code>File "/home/maurits/freqtrade/user_data/hyperopts/BBRSI_hyperopts.py", line 55, in populate_indicators
dataframe["bb_middleband1"] = bollinger1["middle"]
File "/home/maurits/freqtrade/.env/lib/python3.8/site-packages/pandas/core/frame.py", line 2800, in __getitem__
indexer = self.columns.get_loc(key)
File "/home/maurits/freqtrade/.env/lib/python3.8/site-packages/pandas/core/indexes/base.py", line 2648, in get_loc
return self._engine.get_loc(self._maybe_cast_indexer(key))
File "pandas/_libs/index.pyx", line 111, in pandas._libs.index.IndexEngine.get_loc
File "pandas/_libs/index.pyx", line 138, in pandas._libs.index.IndexEngine.get_loc
File "pandas/_libs/hashtable_class_helper.pxi", line 1619, in pandas._libs.hashtable.PyObjectHashTable.get_item
File "pandas/_libs/hashtable_class_helper.pxi", line 1627, in pandas._libs.hashtable.PyObjectHashTable.get_item
KeyError: 'middle'
</code></pre>