参考：https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.values.html
作用：返回DataFrame的numpy.ndarray。只有DataFrame中的值将被返回，轴标签将被删除。
import pandas as pd
d1 = [[3,"negative",2],[4,"negative",6],[11,"positive",0],[12,"positive",2]]
df1 = pd.DataFrame(d1, columns=["xuhao","result","value"])
print(df1,"\n")
print(df1.dtypes,"\n")
print(df1.values,"\n")
print(type(df1.values))输出结果
xuhao result value
0 3 negative 2
1 4 negative 6
2 11 positive 0
3 12 positive 2
xuhao int64
result object
value int64
dtype: object
[[3 'negative' 2]
[4 'negative' 6]
[11 'positive' 0]
[12 'positive' 2]]
<class 'numpy.ndarray'>标签：positive,df1,negative,DataFrame,values,pandas From： https://www.cnblogs.com/chaimy/p/17226844.html