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fixed a problem with multi index caused by the default value of groupkey (#1917)
* fixed a problem with multi index caused by the default value of groupkey * modify group_key default value * limit pandas verion * format with black * fix docs error * fix docs error * fixed bugs caused by pandas upgrade * remove needless code * reformat with black * limit version & add docs
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@@ -19,9 +19,9 @@ def generate_order(stock: str, start_idx: int, end_idx: int) -> bool:
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df["date"] = df["datetime"].dt.date.astype("datetime64")
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df = df.set_index(["instrument", "datetime", "date"])
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df = df.groupby("date").take(range(start_idx, end_idx)).droplevel(level=0)
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df = df.groupby("date", group_keys=False).take(range(start_idx, end_idx)).droplevel(level=0)
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order_all = pd.DataFrame(df.groupby(level=(2, 0)).mean().dropna())
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order_all = pd.DataFrame(df.groupby(level=(2, 0), group_keys=False).mean().dropna())
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order_all["amount"] = np.random.lognormal(-3.28, 1.14) * order_all["$volume0"]
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order_all = order_all[order_all["amount"] > 0.0]
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order_all["order_type"] = 0
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