python - 如何更改最初属于类型类别的 pandas Data Frame 列的类型？

Question

我的数据框 df 中有以下列:

df.dtypes
MeanTemperatureC              int64
MaxTemperatureC             float64
MinTemperatureC               int64
DewPointC                     int64
MeanDewPointC                 int64
MinDewpointC                  int64
MaxHumidity                   int64
MeanHumidity                  int64
MinHumidity                   int64
MaxSeaLevelPressurehPa        int64
MeanSeaLevelPressurehPa     float64
MinSeaLevelPressurehPa        int64
MaxVisibilityKm               int64
MeanVisibilityKm            float64
MinVisibilitykM             float64
MaxWindSpeedKm/h              int64
MeanWindSpeedKm/h             int64
MeanTemperatureCT          category
dtype: object

我想将“MeanTemperatureCT”列的数据类型更改为 str。我已经尝试过以下方法:

df['MeanTemperatureCT'].astype(np.str)

而且它没有改变数据类型。所以请帮忙。

Answer 1

df['MeanTemperatureCT']= df['MeanTemperatureCT'].astype(str)