Merge pull request #20419 from charris/backport-20409

MAINT: import setuptools before distutils in one np.random test

numpy/random/_examples/cython/setup.py

@@ -4,6 +4,7 @@
 
 Usage: python setup.py build_ext -i
 """
+import setuptools  # triggers monkeypatching distutils
 from distutils.core import setup
 from os.path import dirname, join, abspath