Problems with from astroML.utils.decorators import pickle_results

[Keith Sloan]

Trying to run some old sample which has

 from astroML.decorators import pickle_results

Told that decorators has been depreciated and to use  from astroMLutils.decorators import pickle_results

But cannot find astroML.utils

Traceback (most recent call last):
  File "sample.py", line 11, in <module>
    from astroML.utils.decorators import pickle_results
ImportError: No module named astroML.utils.decorators

Where do I find and then install astroML.utils?

[Keith Sloan]

This is a link to the sample

https://www.astroml.org/book_figures/chapter3/fig_correlations.html