Use .loc for assignments
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		| @@ -149,8 +149,8 @@ class Backtesting: | ||||
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|             # To avoid using data from future, we use buy/sell signals shifted | ||||
|             # from the previous candle | ||||
|             df_analyzed.loc[:, 'buy'] = df_analyzed['buy'].shift(1) | ||||
|             df_analyzed.loc[:, 'sell'] = df_analyzed['sell'].shift(1) | ||||
|             df_analyzed.loc[:, 'buy'] = df_analyzed.loc[:, 'buy'].shift(1) | ||||
|             df_analyzed.loc[:, 'sell'] = df_analyzed.loc[:, 'sell'].shift(1) | ||||
|  | ||||
|             df_analyzed.drop(df_analyzed.head(1).index, inplace=True) | ||||
|  | ||||
|   | ||||
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