尝试从Pands DataFrme列中分离单词

时间:2019-07-18 09:04:54

标签: python pandas

我尝试从DataFrame列中分离单词:

Binary = []
for i in range(0,len(data)):
    if data['attack'][i] == 'normal':
        Binary.append(1)
    else:
        Binary.append(0)
print(len(Binary))

data= pd.DataFrame({'attack':['normal','neptune','ps','normal','neptune']})
print(data)
    attack
0   normal
1  neptune
2       ps
3   normal
4  neptune

我们要将这些列值更改为: ValueError:系列的真值不明确。使用a.empty,a.bool(),a.item(),a.any()或a.all()。

   attack
0       1
1       0
2       0
3       1
4       0

仅正常= 1否则0

2 个答案:

答案 0 :(得分:0)

将布尔掩码转换为整数,以实现True/False1/0的映射:

data['attack'] = data['attack'].eq('normal').astype(int)

或使用numpy.where同时指定两个值:

data['attack'] = np.where(data['attack'].eq('normal'), 1, 0)

print(data)
  attack
0       1
1       0
2       0
3       1
4       0

答案 1 :(得分:0)

for index, row in data.iteritems():
for each in row.iteritems():
    if each[1] is "normal":
        print(each[0], "0")
    else:
        print(each[0], "1")