toolchain-utils: fix python3 errors in go scripts

There are several places go scrtips launching and generating python
related code. This patch makes sure they are python 3 compatible.

BUG=chromium:1042452, chromium:1011676
TEST=Passed all python and go tests.

Change-Id: Ie531ceedb14ca2af94bd26f59ba4cab399ef1e6a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2054081
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Commit-Queue: Zhizhou Yang <zhizhouy@google.com>
Tested-by: Zhizhou Yang <zhizhouy@google.com>
Auto-Submit: Zhizhou Yang <zhizhouy@google.com>

8 files changed, 40 insertions, 40 deletions

diff --git a/compiler_wrapper/bisect_flag.go b/compiler_wrapper/bisect_flag.go
index 8aec3e7e..f07d9a63 100644
--- a/compiler_wrapper/bisect_flag.go
+++ b/compiler_wrapper/bisect_flag.go
@@ -20,7 +20,7 @@ import sys
 def ExpandArgs(args, target):
 	for arg in args:
 		if arg[0] == '@':
-			with open(arg[1:], 'rb') as f:
+			with open(arg[1:], 'r', encoding='utf-8') as f:
 				ExpandArgs(shlex.split(f.read()), target)
 		else:
 			target.append(arg)
@@ -64,7 +64,7 @@ func calcBisectCommand(env env, cfg *config, bisectStage string, compilerCmd *co
 	return &command{
 		Path: "/usr/bin/env",
 		Args: append([]string{
-			"python",
+			"python3",
 			"-c",
 			bisectPythonCommand,
 			bisectStage,
diff --git a/compiler_wrapper/bisect_flag_test.go b/compiler_wrapper/bisect_flag_test.go
index 5c4c82d6..cc203a0f 100644
--- a/compiler_wrapper/bisect_flag_test.go
+++ b/compiler_wrapper/bisect_flag_test.go
@@ -56,7 +56,7 @@ func TestCallBisectDriverWithCCache(t *testing.T) {
 		if err := verifyPath(cmd, "/usr/bin/env"); err != nil {
 			t.Error(err)
 		}
-		if err := verifyArgOrder(cmd, "python", "/usr/bin/ccache"); err != nil {
+		if err := verifyArgOrder(cmd, "python3", "/usr/bin/ccache"); err != nil {
 			t.Error(err)
 		}
 		if err := verifyEnvUpdate(cmd, "CCACHE_DIR=.*"); err != nil {
@@ -138,7 +138,7 @@ func withBisectTestContext(t *testing.T, work func(ctx *testContext)) {
 			if err := verifyPath(cmd, "/usr/bin/env"); err != nil {
 				return err
 			}
-			if cmd.Args[0] != "python" {
+			if cmd.Args[0] != "python3" {
 				return fmt.Errorf("expected a call to python. Got: %s", cmd.Args[0])
 			}
 			if cmd.Args[1] != "-c" {
diff --git a/compiler_wrapper/testdata/android_golden/bisect.json b/compiler_wrapper/testdata/android_golden/bisect.json
index 25df7f17..a1ffc50b 100644
--- a/compiler_wrapper/testdata/android_golden/bisect.json
+++ b/compiler_wrapper/testdata/android_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/user/home/ANDROID_BISECT",
             "/tmp/stable/clang.real",
@@ -53,9 +53,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/tmp/stable/clang.real",
@@ -91,9 +91,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/tmp/stable/clang.real",
diff --git a/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json b/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
index 28adfee2..437cae52 100644
--- a/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_clang_host_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/tmp/sysroot_bisect",
             "/tmp/stable/clang",
@@ -67,9 +67,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/tmp/stable/clang",
@@ -119,9 +119,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/tmp/stable/clang",
diff --git a/compiler_wrapper/testdata/cros_hardened_golden/bisect.json b/compiler_wrapper/testdata/cros_hardened_golden/bisect.json
index b00f9740..a6ac7a19 100644
--- a/compiler_wrapper/testdata/cros_hardened_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_hardened_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/tmp/sysroot_bisect",
             "/usr/bin/ccache",
@@ -81,9 +81,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",
@@ -147,9 +147,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",
diff --git a/compiler_wrapper/testdata/cros_hardened_llvmnext_golden/bisect.json b/compiler_wrapper/testdata/cros_hardened_llvmnext_golden/bisect.json
index b00f9740..a6ac7a19 100644
--- a/compiler_wrapper/testdata/cros_hardened_llvmnext_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_hardened_llvmnext_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/tmp/sysroot_bisect",
             "/usr/bin/ccache",
@@ -81,9 +81,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",
@@ -147,9 +147,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",
diff --git a/compiler_wrapper/testdata/cros_hardened_noccache_golden/bisect.json b/compiler_wrapper/testdata/cros_hardened_noccache_golden/bisect.json
index 5075f843..ac9beb55 100644
--- a/compiler_wrapper/testdata/cros_hardened_noccache_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_hardened_noccache_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/tmp/sysroot_bisect",
             "/usr/bin/clang",
@@ -76,9 +76,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/clang",
@@ -137,9 +137,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/clang",
diff --git a/compiler_wrapper/testdata/cros_nonhardened_golden/bisect.json b/compiler_wrapper/testdata/cros_nonhardened_golden/bisect.json
index cb5dea01..22ba14c0 100644
--- a/compiler_wrapper/testdata/cros_nonhardened_golden/bisect.json
+++ b/compiler_wrapper/testdata/cros_nonhardened_golden/bisect.json
@@ -18,9 +18,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "/tmp/sysroot_bisect",
             "/usr/bin/ccache",
@@ -73,9 +73,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",
@@ -131,9 +131,9 @@
         "cmd": {
           "path": "/usr/bin/env",
           "args": [
-            "python",
+            "python3",
             "-c",
-            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'rb') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
+            "\nimport bisect_driver\nimport shlex\nimport sys\n\ndef ExpandArgs(args, target):\n\tfor arg in args:\n\t\tif arg[0] == '@':\n\t\t\twith open(arg[1:], 'r', encoding='utf-8') as f:\n\t\t\t\tExpandArgs(shlex.split(f.read()), target)\n\t\telse:\n\t\t\ttarget.append(arg)\n\treturn target\n\nstage = sys.argv[1]\ndir = sys.argv[2]\nexecargs = ExpandArgs(sys.argv[3:], [])\n\nsys.exit(bisect_driver.bisect_driver(stage, dir, execargs))\n",
             "someBisectStage",
             "someBisectDir",
             "/usr/bin/ccache",