toolchain-utils: migrate all in-use projects to python 3

This patch migrates all in-use projects left to python 3.

BUG=chromium:1011676
TEST=Passed unittests and launched scripts manually.

Change-Id: I7f2de4e1131c05bacfac80667f3064da8adaebfd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2051397
Reviewed-by: George Burgess <gbiv@chromium.org>
Tested-by: Zhizhou Yang <zhizhouy@google.com>
Auto-Submit: Zhizhou Yang <zhizhouy@google.com>

1 files changed, 44 insertions, 33 deletions

diff --git a/debug_info_test/whitelist.py b/debug_info_test/whitelist.py
index 383fcc3d..b53387a8 100644
--- a/debug_info_test/whitelist.py
+++ b/debug_info_test/whitelist.py
@@ -1,11 +1,17 @@
+# -*- coding: utf-8 -*-
 # Copyright 2018 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+"""Whitelist functions."""
+
+from __future__ import print_function
+
 import os
 import glob
 import re
 
+
 # Matching a string of length m in an NFA of size n is O(mn^2), but the
 # performance also depends largely on the implementation. It appears to be fast
 # enough according to the tests.
@@ -13,45 +19,50 @@ import re
 # The performance bottleneck of this script is readelf. Unless this becomes
 # slower than readelf, don't waste time here.
 def is_whitelisted(list_name, pattern):
-    """chech whether the given pattern is specified in the whitelist.
+  """Check whether the given pattern is specified in the whitelist.
+
+  Args:
+    list_name: name of the whitelist.
+    pattern: the target string.
+
+  Returns:
+    True if matched otherwise False.
+  """
+  return pattern and whitelists[list_name].match(pattern)
 
-    Args:
-        list_name: name of the whitelist
-        pattern: the target string
-    Returns:
-        True if matched otherwise False
-    """
-    return pattern and whitelists[list_name].match(pattern)
 
 def prepare_whitelist(patterns):
-    """Join and compile the re patterns.
+  """Join and compile the re patterns.
+
+  Args:
+    patterns: regex patterns.
+
+  Returns:
+    A compiled re object.
+  """
+  return re.compile('|'.join(patterns))
 
-    Args:
-        patterns: regex patterns.
-    Return:
-        A compiled re object
-    """
-    return re.compile('|'.join(patterns))
 
 def load_whitelists(dirname):
-    """Load whitelists under dirname.
-
-    A whitelist ends with .whitelist.
-
-    Args:
-        dirname: path to the dir.
-    Returns:
-        A dictionary of 'filename' -> whitelist matcher.
-    """
-    wlist = {}
-    for fn in glob.glob(os.path.join(dirname, '*.whitelist')):
-        key = os.path.splitext(os.path.basename(fn))[0]
-        with open(fn, 'r') as f:
-            patterns = f.read().splitlines()
-            patterns = [l for l in patterns if l != '']
-            patterns = [l for l in patterns if l[0] != '#']
-        wlist[key] = prepare_whitelist(patterns)
-    return wlist
+  """Load whitelists under dirname.
+
+  A whitelist ends with .whitelist.
+
+  Args:
+    dirname: path to the dir.
+
+  Returns:
+    A dictionary of 'filename' -> whitelist matcher.
+  """
+  wlist = {}
+  for fn in glob.glob(os.path.join(dirname, '*.whitelist')):
+    key = os.path.splitext(os.path.basename(fn))[0]
+    with open(fn, 'r', encoding='utf-8') as f:
+      patterns = f.read().splitlines()
+      patterns = [l for l in patterns if l != '']
+      patterns = [l for l in patterns if l[0] != '#']
+    wlist[key] = prepare_whitelist(patterns)
+  return wlist
 
 
 whitelists = load_whitelists(os.path.dirname(__file__))