Index: packages/Python/lldbsuite/test/decorators.py
===================================================================
--- packages/Python/lldbsuite/test/decorators.py
+++ packages/Python/lldbsuite/test/decorators.py
@@ -680,7 +680,7 @@
         compiler_path = self.getCompiler()
         f = tempfile.NamedTemporaryFile()
         cmd = [self.getCompiler(), "-x", "c++", "-c", "-o", f.name, "-"]
-        p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        p = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
         stdout, stderr = p.communicate('struct __attribute__((%s)) Test {};'%attr)
         if attr in stderr:
             return "Compiler does not support attribute %s"%(attr)
@@ -715,7 +715,7 @@
 
     def is_compiler_clang_with_ubsan(self):
         # Write out a temp file which exhibits UB.
-        inputf = tempfile.NamedTemporaryFile(suffix='.c')
+        inputf = tempfile.NamedTemporaryFile(suffix='.c', mode='w')
         inputf.write('int main() { int x = 0; return x / x; }\n')
         inputf.flush()
 
Index: packages/Python/lldbsuite/test/functionalities/postmortem/elf-core/TestLinuxCore.py
===================================================================
--- packages/Python/lldbsuite/test/functionalities/postmortem/elf-core/TestLinuxCore.py
+++ packages/Python/lldbsuite/test/functionalities/postmortem/elf-core/TestLinuxCore.py
@@ -46,16 +46,19 @@
         """Test that lldb can read the process information from an i386 linux core file."""
         self.do_test("linux-i386", self._i386_pid, self._i386_regions, "a.out")
 
+    @skipIf(oslist=['windows'])
     def test_mips_o32(self):
         """Test that lldb can read the process information from an MIPS O32 linux core file."""
         self.do_test("linux-mipsel-gnuabio32", self._mips_o32_pid,
                 self._mips_regions, "linux-mipsel-gn")
 
+    @skipIf(oslist=['windows'])
     def test_mips_n32(self):
         """Test that lldb can read the process information from an MIPS N32 linux core file """
         self.do_test("linux-mips64el-gnuabin32", self._mips64_n32_pid,
                 self._mips_regions, "linux-mips64el-")
 
+    @skipIf(oslist=['windows'])
     def test_mips_n64(self):
         """Test that lldb can read the process information from an MIPS N64 linux core file """
         self.do_test("linux-mips64el-gnuabi64", self._mips64_n64_pid,
Index: packages/Python/lldbsuite/test/python_api/hello_world/main.c
===================================================================
--- packages/Python/lldbsuite/test/python_api/hello_world/main.c
+++ packages/Python/lldbsuite/test/python_api/hello_world/main.c
@@ -1,5 +1,11 @@
 #include <stdio.h>
+#ifdef _MSC_VER
+#include <windows.h>
+#define sleep Sleep
+#else
 #include <unistd.h>
+#endif
+
 int main(int argc, char const *argv[])
 {
     lldb_enable_attach();