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我有这样创造了一个多索引大熊猫数据帧:使用列表索引一个多索引的数据帧
m_index = ['time_remaining', 'inventory']
for i in indicators:
m_index.append(i.name)
cols = []
for col in m_index:
cols.append(col)
cols.append('action')
cols.append('cost')
optimal_actions = pd.DataFrame(columns=cols)
optimal_actions.set_index(m_index, inplace=True)
我那么有索引值的列表:
state_variables = [indicator.value for indicator in indicators]
state = [time_remaining, i*trade_size]
state.extend(state_variables)
而且我试图通过值列表索引的列设置为一个值:
state = [300, 1, 1.0]
optimal_actions.loc[state] = [-1, -0.2]
这是给我一个讨厌的错误:
ValueError: zero-size array to reduction operation maximum which has no identity
任何帮助将不胜感激!
你能提供样本数据吗?请参阅:[MCVE](https://stackoverflow.com/help/mcve) –
我相信现在有足够的数据来解决问题 –