Question

下面这段Python代码什么意思？？

from sklearn.preprocessing import StandardScalerfrom sklearn.naive_bayes import GaussianNB, MultinomialNBfrom sklearn.pipeline import Pipelinefrom sklearn.neighbors import KNeighborsClassifier
from sklearn.preprocessing import StandardScaler
from sklearn.naive_bayes import GaussianNB, MultinomialNB
from sklearn.pipeline import Pipeline
from sklearn.neighbors import KNeighborsClassifier
GaussianNB, MultinomialNB，KNeighborsClassifier作为机器学习的算法不是应该自己做包吗？看上面的代码似乎在Python中有现成的包？sklearn.preprocessing，sklearn.naive_bayes ，sklearn.pipeline，sklearn.neighbors，StandardScaler，Pipeline又是什么意思？？

Answer 1

建议你看下具体的文档把，这些都是现成的api 不是要自己写的

追问

from sklearn.preprocessing import StandardScaler具体到这段代码是什么意思？