This patch was developed in-house.  It has been submitted upstream:

http://bugs.python.org/issue23287

--- Python-2.7.9/Lib/ctypes/util.py.~1~	2014-12-10 07:59:34.000000000 -0800

+++ Python-2.7.9/Lib/ctypes/util.py	2015-01-20 15:22:03.139588641 -0800

@@ -182,22 +182,11 @@

     elif sys.platform == "sunos5":

-        def _findLib_crle(name, is64):

-            if not os.path.exists('/usr/bin/crle'):

-                return None

-

+        def _findLib_path(name, is64):

             if is64:

-                cmd = 'env LC_ALL=C /usr/bin/crle -64 2>/dev/null'

+                paths = "/lib/64:/usr/lib/64"

             else:

-                cmd = 'env LC_ALL=C /usr/bin/crle 2>/dev/null'

-

-            for line in os.popen(cmd).readlines():

-                line = line.strip()

-                if line.startswith('Default Library Path (ELF):'):

-                    paths = line.split()[4]

-

-            if not paths:

-                return None

+                paths = "/lib:/usr/lib"

             for dir in paths.split(":"):

                 libfile = os.path.join(dir, "lib%s.so" % name)

@@ -207,7 +196,7 @@

             return None

         def find_library(name, is64 = False):

-            return _get_soname(_findLib_crle(name, is64) or _findLib_gcc(name))

+            return _get_soname(_findLib_path(name, is64) or _findLib_gcc(name))

     else: