diff --git a/lldb/examples/summaries/synth.py b/lldb/examples/summaries/synth.py
index 23f02d9b50f3..02dcc4f70146 100644
--- a/lldb/examples/summaries/synth.py
+++ b/lldb/examples/summaries/synth.py
@@ -33,11 +33,8 @@ class PythonObjectSyntheticChildProvider(object):
     def gen_child(self, name, value):
         data = None
         type = None
-        if isinstance(value, int):
-            data = lldb.SBData.CreateDataFromUInt32Array(
-                self.bo, self.ps, [value])
-            type = self.value.target.GetBasicType(lldb.eBasicTypeInt)
-        elif isinstance(value, long):
+        import six
+        if isinstance(value, six.integer_types):
             data = lldb.SBData.CreateDataFromUInt64Array(
                 self.bo, self.ps, [value])
             type = self.value.target.GetBasicType(lldb.eBasicTypeLong)
diff --git a/lldb/packages/Python/lldbsuite/test/macosx/nslog/TestDarwinNSLogOutput.py b/lldb/packages/Python/lldbsuite/test/macosx/nslog/TestDarwinNSLogOutput.py
index 287c1c1b87b3..f844fff978c4 100644
--- a/lldb/packages/Python/lldbsuite/test/macosx/nslog/TestDarwinNSLogOutput.py
+++ b/lldb/packages/Python/lldbsuite/test/macosx/nslog/TestDarwinNSLogOutput.py
@@ -60,8 +60,13 @@ class DarwinNSLogOutputTestCase(TestBase):
 
         # So that the child gets torn down after the test.
         import pexpect
-        self.child = pexpect.spawn('%s %s %s' % (lldbtest_config.lldbExec,
-                                                 self.lldbOption, exe))
+        import sys
+        if sys.version_info.major == 3:
+          self.child = pexpect.spawnu('%s %s %s' % (lldbtest_config.lldbExec,
+                                                    self.lldbOption, exe))
+        else:
+          self.child = pexpect.spawn('%s %s %s' % (lldbtest_config.lldbExec,
+                                                   self.lldbOption, exe))
         child = self.child
 
         # Turn on logging for what the child sends back.
diff --git a/lldb/packages/Python/lldbsuite/test/terminal/TestSTTYBeforeAndAfter.py b/lldb/packages/Python/lldbsuite/test/terminal/TestSTTYBeforeAndAfter.py
index e34fc3416d7e..a2d8be94acf7 100644
--- a/lldb/packages/Python/lldbsuite/test/terminal/TestSTTYBeforeAndAfter.py
+++ b/lldb/packages/Python/lldbsuite/test/terminal/TestSTTYBeforeAndAfter.py
@@ -42,7 +42,11 @@ class TestSTTYBeforeAndAfter(TestBase):
         lldb_prompt = "(lldb) "
 
         # So that the child gets torn down after the test.
-        self.child = pexpect.spawn('expect')
+        import sys
+        if sys.version_info.major == 3:
+          self.child = pexpect.spawnu('expect')
+        else:
+          self.child = pexpect.spawn('expect')
         child = self.child
 
         child.expect(expect_prompt)
diff --git a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/lldbmi_testcase.py b/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/lldbmi_testcase.py
index 59a5b324465f..45af45701d63 100644
--- a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/lldbmi_testcase.py
+++ b/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/lldbmi_testcase.py
@@ -42,8 +42,13 @@ class MiTestCaseBase(Base):
 
     def spawnLldbMi(self, exe=None, args=None, preconfig=True):
         import pexpect
-        self.child = pexpect.spawn("%s --interpreter %s" % (
-            self.lldbMiExec, args if args else ""), cwd=self.getBuildDir())
+        import sys
+        if sys.version_info.major == 3:
+          self.child = pexpect.spawnu("%s --interpreter %s" % (
+              self.lldbMiExec, args if args else ""), cwd=self.getBuildDir())
+        else:
+          self.child = pexpect.spawn("%s --interpreter %s" % (
+              self.lldbMiExec, args if args else ""), cwd=self.getBuildDir())
         self.child.setecho(True)
         self.mylog = self.getBuildArtifact("child.log")
         self.child.logfile_read = open(self.mylog, "w")