Python 错误：试图在数据帧切片的副本上设置值

错误消息：

df_play = pd.read_csv("players_stats_by_season_full_details.csv")

VC = df_play[df_play["League"] == "NBA"]
VC

VC["FT_Miss"] = VC['FTA'] - VC['FTM']

---

VC

不是数据帧，它是原始数据的一部分，这意味着它只是指向df_play的指针

尝试

VC=df\u play[df\u play[“League”]=“NBA”]。copy（）

A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead