Dataframe删除列全为空的行

import pandas as pd
path1 = "D:/正例.csv"
df = pd.read_csv(path1,sep=',',encoding='gbk')
#删除全为空数据的全部列
for i in df.columns:
    if df[i].count() == 0:
        df.drop(labels=i, axis=1, inplace=True)
print(df)