TypeError: 'encoding' is an invalid keyword argument for this function

python 2.7 問題

　data_file = open("F:\\MyPro\\data.yaml", "r", encoding='utf-8')

　　運行的時候報錯：TypeError: 'encoding' is an invalid keyword argument for this function
如何解決：

import io
data_file = io.open("F:\\MyPro\\data.yaml", "r", encoding='utf-8')