df["ret_1d"] = df.groupby("ts_code")["close"].pct_change(1) df["ret_5d"] = df.groupby("ts_code")["close"].pct_change(5) df["ret_20d"] = df.groupby("ts_code")["close ...
df["ret_1d"] = df.groupby("ts_code")["close"].pct_change(1) df["ret_5d"] = df.groupby("ts_code")["close"].pct_change(5) df["ret_20d"] = df.groupby("ts_code")["close ...
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