重命名python pandas中的列[关闭]

Question

我在下面尝试过，但只有最后一列被重命名。

output_df.rename(
    columns={"area": "areaNums", "week": "Week", "year": "Year", "price": "PriceColumn"},
    inplace=True,
)

我得到 4 列 area、week、year、PriceColumn 而不是 areaNums、Week、Year、PriceColumn。

Answer 1

试试这个：

df = pd.DataFrame({'area': [], 
                    'week': [],
                    'year': [],
                    'price': []
                    })

df.rename(columns={"area": "areaNums", "week": "Week", "year": "Year", "price": "PriceColumn"}, 
    inplace=True
)

print(df)

输出：

Empty DataFrame
Columns: [areaNums, Week, Year, PriceColumn]
Index: []

如您所愿。