update imports

Author: michaelbynum

Diff for: pyomo/contrib/coramin/__init__.py

@@ -1,3 +1,13 @@
+from pyomo.common.dependencies import numpy, numpy_available, attempt_import
+from pyomo.common import unittest
+
+if not numpy_available:
+    raise unittest.SkipTest('numpy is not available')
+
+pybnb, pybnb_available = attempt_import('pybnb')
+if not pybnb_available:
+    raise unittest.SkipTest('pybnb is not available')
+
 from . import utils
 from . import domain_reduction
 from . import relaxations

Diff for: setup.py

@@ -276,6 +276,7 @@ def __ne__(self, other):
             #'pathos',   # requested for #963, but PR currently closed
             'pint',  # units
             'plotly',  # incidence_analysis
+            'pybnb',  # coramin
             'python-louvain',  # community_detection
             'pyyaml',  # core
             # qtconsole also requires a supported Qt version (PyQt5 or PySide6).