diff --git a/lsteamclient/gen_wrapper.py b/lsteamclient/gen_wrapper.py
index a9c6e7fd..4451d3de 100755
--- a/lsteamclient/gen_wrapper.py
+++ b/lsteamclient/gen_wrapper.py
@@ -1,8 +1,10 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 #NOTE: If you make modifications here, consider whether they should
 #be duplicated in ../vrclient/gen_wrapper.py
 
+from __future__ import print_function
+
 import pprint
 import sys
 import clang.cindex
@@ -502,7 +504,7 @@ for sdkver in sdk_versions:
 
         diagnostics = list(tu.diagnostics)
         if len(diagnostics) > 0:
-            print 'There were parse errors'
+            print('There were parse errors')
             pprint.pprint(diagnostics)
         else:
             children = list(tu.cursor.get_children())
diff --git a/proton b/proton
index 18bf6a14..cb771e6b 100755
--- a/proton
+++ b/proton
@@ -1,7 +1,9 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python
 
 #script to launch Wine with the correct environment
 
+from __future__ import print_function
+
 import filecmp
 import json
 import os
@@ -324,7 +326,8 @@ if "nod3d11" in config_opts:
         del dlloverrides["dxgi"]
 
 s = ""
-for dll, setting in dlloverrides.iteritems():
+for dll in dlloverrides:
+    setting = dlloverrides[dll]
     if len(s) > 0:
         s = s + ";" + dll + "=" + setting
     else:
@@ -394,7 +397,7 @@ def dump_dbg_scripts():
         f.write("cd \"" + os.getcwd() + "\"\n")
         dump_dbg_env(f)
         f.write("\t\"" + wine_path + "\" winedbg \"$@\"\n")
-    os.chmod(dir + "winedbg", 0755)
+    os.chmod(dir + "winedbg", 0o755)
 
     with open(dir + "winedbg_run", "w") as f:
         f.write("#!/bin/bash\n")
@@ -411,7 +414,7 @@ def dump_dbg_scripts():
         f.write(")\n")
         dump_dbg_env(f)
         f.write("\t\"" + wine_path + "\" winedbg \"${@:-${DEF_CMD[@]}}\"\n")
-    os.chmod(dir + "winedbg_run", 0755)
+    os.chmod(dir + "winedbg_run", 0o755)
 
     with open(dir + "gdb_attach", "w") as f:
         f.write("#!/bin/bash\n")
@@ -426,7 +429,7 @@ def dump_dbg_scripts():
         f.write("WPID_DEC=$(printf %d 0x$WPID_HEX)\n")
         dump_dbg_env(f)
         f.write("\t\"" + wine_path + "\" winedbg --gdb $WPID_DEC\n")
-    os.chmod(dir + "gdb_attach", 0755)
+    os.chmod(dir + "gdb_attach", 0o755)
 
     with open(dir + "gdb_run", "w") as f:
         f.write("#!/bin/bash\n")
@@ -443,7 +446,7 @@ def dump_dbg_scripts():
         f.write(")\n")
         dump_dbg_env(f)
         f.write("\t\"" + wine_path + "\" winedbg --gdb \"${@:-${DEF_CMD[@]}}\"\n")
-    os.chmod(dir + "gdb_run", 0755)
+    os.chmod(dir + "gdb_run", 0o755)
 
     with open(dir + "run", "w") as f:
         f.write("#!/bin/bash\n")
@@ -463,7 +466,7 @@ def dump_dbg_scripts():
             f.write("\t\"" + wine_path + "\" start \"${@:-${DEF_CMD[@]}}\"\n")
         else:
             f.write("\t\"" + wine_path + "\" \"${@:-${DEF_CMD[@]}}\"\n")
-    os.chmod(dir + "run", 0755)
+    os.chmod(dir + "run", 0o755)
 
 def run():
     if "PROTON_DUMP_DEBUG_COMMANDS" in os.environ:
@@ -477,6 +480,13 @@ def run():
     else:
         run_wine([wine_path] + sys.argv[2:])
 
+if sys.version_info[0] == 2:
+    binary_stdout = sys.stdout
+elif sys.version_info[0] == 3:
+    binary_stdout = sys.stdout.buffer
+else:
+    raise Exception("Unsuported python version")
+
 #determine mode
 if sys.argv[1] == "run":
     #start target app
@@ -489,11 +499,11 @@ elif sys.argv[1] == "waitforexitandrun":
 elif sys.argv[1] == "getcompatpath":
     #linux -> windows path
     path = subprocess.check_output([wine_path, "winepath", "-w", sys.argv[2]], env=env, stderr=lfile)
-    sys.stdout.write(path)
+    binary_stdout.write(path)
 elif sys.argv[1] == "getnativepath":
     #windows -> linux path
     path = subprocess.check_output([wine_path, "winepath", sys.argv[2]], env=env, stderr=lfile)
-    sys.stdout.write(path)
+    binary_stdout.write(path)
 else:
     log("Need a verb.")
     sys.exit(1)
diff --git a/user_settings.sample.py b/user_settings.sample.py
index 24fa339c..a3ee5331 100755
--- a/user_settings.sample.py
+++ b/user_settings.sample.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python
 
 #to enable these settings, name this file "user_settings.py"
 
diff --git a/vrclient_x64/gen_wrapper.py b/vrclient_x64/gen_wrapper.py
index 0b196ee5..13709599 100755
--- a/vrclient_x64/gen_wrapper.py
+++ b/vrclient_x64/gen_wrapper.py
@@ -1,8 +1,10 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 #NOTE: If you make modifications here, consider whether they should
 #be duplicated in ../lsteamclient/gen_wrapper.py
 
+from __future__ import print_function
+
 import pprint
 import sys
 import clang.cindex
@@ -403,7 +405,7 @@ def get_capi_thunk_params(method):
     def toBOOL(x):
         return "TRUE" if x else "FALSE"
     returns_record = method.result_type.get_canonical().kind == clang.cindex.TypeKind.RECORD
-    param_types = map(lambda x: x.type, get_params(method))
+    param_types = [x.type for x in get_params(method)]
     if returns_record:
         param_types.insert(0, method.result_type)
     param_count = len(param_types)
@@ -970,7 +972,7 @@ for sdkver in sdk_versions:
 
         diagnostics = list(tu.diagnostics)
         if len(diagnostics) > 0:
-            print 'There were parse errors'
+            print('There were parse errors')
             pprint.pprint(diagnostics)
         else:
             children = list(tu.cursor.get_children())