chore: import upstream snapshot with attribution

tools/coverage/python_coverage.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2020 PaddlePaddle 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.
+"""
+usage: python_coverage.py > python-coverage.info
+"""
+
+from os import path
+from xml.etree import ElementTree
+
+tree = ElementTree.parse('python-coverage.xml')
+root = tree.getroot()
+
+sources = root.findall('sources/source')
+
+source = sources[-1].text
+
+for clazz in root.findall('packages/package/classes/class'):
+    clazz_filename = clazz.attrib.get('filename')
+    clazz_filename = path.join(source, clazz_filename)
+
+    if clazz_filename.startswith('/paddle/build/python/'):
+        clazz_filename = (
+            '/paddle/python/' + clazz_filename[len('/paddle/build/python/') :]
+        )
+
+    if not path.exists(clazz_filename):
+        continue
+
+    print('TN:')
+    print(f'SF:{clazz_filename}')
+
+    branch_index = 0
+
+    for line in clazz.findall('lines/line'):
+        line_hits = line.attrib.get('hits')
+        line_number = line.attrib.get('number')
+
+        line_branch = line.attrib.get('branch')
+        line_condition_coverage = line.attrib.get('condition-coverage')
+        line_missing_branches = line.attrib.get('missing-branches')
+
+        if line_branch == 'true':
+            line_condition_coverage = line_condition_coverage.split()
+            line_condition_coverage = line_condition_coverage[1].strip('()')
+            line_condition_coverage = line_condition_coverage.split('/')
+
+            taken = line_condition_coverage[0]
+            taken = int(taken)
+
+            for _ in range(taken):
+                print(f'BRDA:{line_number},{0},{branch_index},{line_hits}')
+                branch_index += 1
+
+            if line_missing_branches:
+                for missing_branch in line_missing_branches.split(','):
+                    print(f'BRDA:{line_number},{0},{branch_index},{0}')
+                    branch_index += 1
+
+        print(f'DA:{line_number},{line_hits}')
+
+    print('end_of_record')