Python3 ready. Py2.7 and Py3 working. Drop PyCObject for all.

Pre Py2.7 support should be possible by including  "capsulethunk.h". (See llvm/wrap.h)

test/asm.py

@@ -25,5 +25,25 @@ class TestAsm(unittest.TestCase):
 
         self.assertEqual(str(m2).strip(), asm.strip())
 
+
+    def test_bitcode(self):
+        # create a module
+        m = Module.new('module1')
+        m.add_global_variable(Type.int(), 'i')
+
+        # write it's assembly representation to a file
+        asm = str(m)
+
+        with open("/tmp/testasm.bc", "wb") as fout:
+            m.to_bitcode(fout)
+
+        # read it back into a module
+        with open("/tmp/testasm.bc", "rb") as fin:
+            m2 = Module.from_bitcode(fin)
+            # The default `m.id` is '<string>'.
+            m2.id = m.id # Copy the name from `m`
+
+        self.assertEqual(str(m2).strip(), asm.strip())
+
 if __name__ == '__main__':
     unittest.main()

test/constants.py

@@ -193,7 +193,7 @@ class TestConstants(unittest.TestCase):
 
         # check result
         for result, golden in zip(results, values):
-            self.assertEqual(result, golden)
+            self.assertEqual(result.decode(), golden)
 
     def test_const_struct(self):
         from random import randint, random
@@ -201,7 +201,7 @@ class TestConstants(unittest.TestCase):
             (0, 0., 0.),
             (-1, -1., -1.),
             (1, 1., 1.),
-        ] + [(randint(0, 0xffffffff), random(), random()) for _ in xrange(100)]
+        ] + [(randint(0, 0xffffffff), random(), random()) for _ in range(100)]
 
         struct_type = Type.struct([Type.int(), Type.float(), Type.double()])
 
@@ -260,7 +260,7 @@ class TestConstants(unittest.TestCase):
             (0, 0, 0, 0),
             (1, 1, 1, 1),
             (-1, -1, -1, -1),
-        ] + [ (randgen(), randgen(), randgen(), randgen()) for _ in xrange(100) ]
+        ] + [ (randgen(), randgen(), randgen(), randgen()) for _ in range(100) ]
 
         def map_constant(packed_values):
             consts = [ Constant.int(Type.int(), i) for i in packed_values ]

test/testattrs.py

@@ -10,7 +10,7 @@ except ImportError:
 import unittest
 
 def make_module():
-    test_module = u"""
+    test_module = """
     define i32 @sum(i32, i32) {
     entry:
             %2 = add i32 %0, %1