Python 键错误,但不确定原因
我正在使用Pima Indian数据集,我得到了一个错误。代码如下:Python 键错误,但不确定原因,python,Python,我正在使用Pima Indian数据集,我得到了一个错误。代码如下: import numpy import pandas import sklearn from sklearn import preprocessing from sklearn.preprocessing import MinMaxScaler from sklearn.neighbors import NearestNeighbors from sklearn.cross_validation import train_te
import numpy
import pandas
import sklearn
from sklearn import preprocessing
from sklearn.preprocessing import MinMaxScaler
from sklearn.neighbors import NearestNeighbors
from sklearn.cross_validation import train_test_split
csvfile = open("diabetes.csv", 'r')
diabetes = pandas.read_csv(csvfile)
min_max_scaler = preprocessing.MinMaxScaler()
diabetes_scaled = min_max_scaler.fit_transform(diabetes)
diabetes_normalized = pandas.DataFrame(diabetes_scaled, columns=diabetes.columns)
X = diabetes_normalized['Pregnancies', 'Glucose', 'BloodPressure', 'SkinThickness', 'Insulin', 'BMI', 'DiabetesPedigreeFunction', 'Age']
我得到最后一行的键错误,但不知道为什么。传递列名称列表,以便从dataframe中选择多个列,如下所示:
X = diabetes_normalized[['Pregnancies', 'Glucose', 'BloodPressure', 'SkinThickness', 'Insulin', 'BMI', 'DiabetesPedigreeFunction', 'Age']]
而不是
X = diabetes_normalized['Pregnancies', 'Glucose', 'BloodPressure', 'SkinThickness', 'Insulin', 'BMI', 'DiabetesPedigreeFunction', 'Age']
选择多个列时,您必须将列列表传递给索引器:
diabetes\u normalized[[‘怀孕’、‘血糖’、‘血压’、‘皮肤厚度’、‘胰岛素’、‘BMI’、‘DiabetesPedigreeFunction’、‘年龄’]
。向我们显示键错误
,而不是仅仅告诉我们您有一个。通常那里有重要的信息。