Tools: rewrite create_sec_package

modules/tools/ota/create_sec_package.py

 #!/usr/bin/env python
 
+###############################################################################
+# Copyright 2017 The Apollo Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+###############################################################################
+
 import secure_upgrade_export as sec_api
 import os
 import sys
 sys.path.append('/home/caros/secure_upgrade/python')
 
 root_config_path = "/home/caros/secure_upgrade/config/secure_config.json"
-returnCode = sec_api.init_secure_upgrade(root_config_path)
-if returnCode == True:
-    print 'Security environment init successfully!'
+ret = sec_api.init_secure_upgrade(root_config_path)
+if ret is True:
+    print('Security environment init successfully!')
 else:
-    print 'Security environment init fail!'
-    exit()
+    print('Security environment init failed!')
+    exit(1)
 
 homedir = os.environ['HOME']
 release_tgz = homedir + '/.cache/apollo_release.tar.gz'
 sec_release_tgz = homedir + '/.cache/sec_apollo_release.tar.gz'
 package_token = homedir + '/.cache/package_token'
 
-returnCode = sec_api.sec_upgrade_get_package(
+ret = sec_api.sec_upgrade_get_package(
     release_tgz, sec_release_tgz, package_token)
-if returnCode == True:
-    print 'Security package generated successfully!'
+if ret is True:
+    print('Security package generated successfully!')
 else:
-    print 'Security package generated fail!'
+    print('Security package generated failed!')