把每个特征名变成0 1 2 3 4 5 这种数字 写的函数 传递的是pandas读取的csv
def hard_code(train_df): dest_feature=["ProductCD","card4"] for name in dest_feature: colorMap = {elem:index+1 for index,elem in enumerate(set(train_df[name]))} train_df[name] = train_df[name].map(colorMap) return train_df train_df=hard_code(train_df) train_df