Question

这是一个简单的代码，就像在这个link中读取python中的arff文件一样（注释的文件也不起作用）：

import arff
for row in arff.load('heart_train.arff'):
        print(row.sex)

这是我收到的错误：

python id3.py 
Traceback (most recent call last):
  File "id3.py", line 1, in <module>
    import arff
ImportError: No module named arff

“heart_train”arff文件数据如下：

@relation cleveland-14-heart-disease
@attribute 'age' real
@attribute 'sex' { female, male}
@attribute 'cp' { typ_angina, asympt, non_anginal, atyp_angina}
@attribute 'trestbps' real
@attribute 'chol' real
@attribute 'fbs' { t, f}
@attribute 'restecg' { left_vent_hyper, normal, st_t_wave_abnormality}
@attribute 'thalach' real
@attribute 'exang' { no, yes}
@attribute 'oldpeak' real
@attribute 'slope' { up, flat, down}
@attribute 'ca' real
@attribute 'thal' { fixed_defect, normal, reversable_defect}
@attribute 'class' { negative, positive}
@data
63,male,typ_angina,145,233,t,left_vent_hyper,150,no,2.3,down,0,fixed_defect,negative
37,male,non_anginal,130,250,f,normal,187,no,3.5,down,0,normal,negative
41,female,atyp_angina,130,204,f,left_vent_hyper,172,no,1.4,up,0,normal,negative
56,male,atyp_angina,120,236,f,normal,178,no,0.8,up,0,normal,negative
57,female,asympt,120,354,f,normal,163,yes,0.6,up,0,normal,negative
57,male,asympt,140,192,f,normal,148,no,0.4,flat,0,fixed_defect,negative
...

Answer 1

您应该将脚本从arff.py重命名为其他内容，例如arfftest.py。 Python无法导入您需要的arff模块，因为它的名称与您的应用程序文件名相同。

如果您还没有安装arff软件包，请使用pip或easy_install进行安装：

pip install arff
# or easy_install arff
# or pypm install arff

Answer 2

我更改你的arff文件后，它可以工作：

注意：我从属性的第二列删除了单个代码。

这是arff文件：

@relation cleveland-14-heart-disease
@attribute age real
@attribute sex { female, male}
@attribute cp { typ_angina, asympt, non_anginal, atyp_angina}
@attribute trestbps real
@attribute chol real
@attribute fbs { t, f}
@attribute restecg { left_vent_hyper, normal, st_t_wave_abnormality}
@attribute thalach real
@attribute exang { no, yes}
@attribute oldpeak real
@attribute slope { up, flat, down}
@attribute ca real
@attribute thal { fixed_defect, normal, reversable_defect}
@attribute class { negative, positive}
@data
63,male,typ_angina,145,233,t,left_vent_hyper,150,no,2.3,down,0,fixed_defect,negative
37,male,non_anginal,130,250,f,normal,187,no,3.5,down,0,normal,negative
41,female,atyp_angina,130,204,f,left_vent_hyper,172,no,1.4,up,0,normal,negative
56,male,atyp_angina,120,236,f,normal,178,no,0.8,up,0,normal,negative
57,female,asympt,120,354,f,normal,163,yes,0.6,up,0,normal,negative
57,male,asympt,140,192,f,normal,148,no,0.4,flat,0,fixed_defect,negative

摘录和输出：

:/tmp:~ cat a.py
import arff
for row in arff.load('heart_train.arff'):
   print(row.sex)
:/tmp:~ python a.py
male
male
female
male
female
male
:/tmp:~
male
:/tmp:~

ImportError：没有名为arff的模块

2 个答案: