--- python2.7-2.7.15.orig/Tools/scripts/h2py.py
+++ python2.7-2.7.15/Tools/scripts/h2py.py
@@ -78,7 +78,10 @@
             sys.stdout.write('# Generated by h2py from stdin\n')
             process(sys.stdin, sys.stdout)
         else:
-            fp = open(filename, 'r')
+            fp = open_include(filename)
+            if not fp:
+                raise IOError("could not find %r on %r" %
+                              (filename, searchdirs))
             outfile = os.path.basename(filename)
             i = outfile.rfind('.')
             if i > 0: outfile = outfile[:i]
@@ -162,13 +165,7 @@
                 outfp.write('from %s import *\n' % importable[filename])
             elif not filedict.has_key(filename):
                 filedict[filename] = None
-                inclfp = None
-                for dir in searchdirs:
-                    try:
-                        inclfp = open(dir + '/' + filename)
-                        break
-                    except IOError:
-                        pass
+                inclfp = open_include(filename)
                 if inclfp:
                     outfp.write(
                             '\n# Included from %s\n' % filename)
@@ -177,5 +174,13 @@
                     sys.stderr.write('Warning - could not find file %s\n' %
                                      filename)
 
+def open_include(filename):
+    for dir in searchdirs:
+        try:
+            return open(dir + '/' + filename, 'r')
+        except IOError:
+            pass
+    return None
+
 if __name__ == '__main__':
     main()
--- python2.7-2.7.15.orig/Lib/plat-generic/regen
+++ python2.7-2.7.15/Lib/plat-generic/regen
@@ -1,3 +1,3 @@
 #! /bin/sh
 set -v
-eval $PYTHON_FOR_BUILD ../../Tools/scripts/h2py.py -i "'(u_long)'" /usr/include/netinet/in.h
+eval $PYTHON_FOR_BUILD ../../Tools/scripts/h2py.py -i "'(u_long)'" netinet/in.h