Renew check-pyc-timestamps.py

- rename it, the are no pyo files on Python 3
- make sure to check all levels of pyc files optimization
- use path globs
- use comprehensions instead of map + filter
- use f-strings and print() instead of sys.stderr.write()

check-pyc-timestamps.py

@@ -0,0 +1,55 @@
+"""Checks if all *.pyc files have later mtime than their *.py files."""
+
+import os
+import sys
+from importlib.util import cache_from_source
+from pathlib import Path
+
+
+RPM_BUILD_ROOT = os.environ.get('RPM_BUILD_ROOT', '')
+
+# ...cpython-3X.pyc
+# ...cpython-3X.opt-1.pyc
+# ...cpython-3X.opt-2.pyc
+LEVELS = (None, 1, 2)
+
+# list of globs of test and other files that we expect not to have bytecode
+not_compiled = [
+    '/usr/bin/*',
+    '*/test/bad_coding.py',
+    '*/test/bad_coding2.py',
+    '*/test/badsyntax_*.py',
+    '*/lib2to3/tests/data/bom.py',
+    '*/lib2to3/tests/data/crlf.py',
+    '*/lib2to3/tests/data/different_encoding.py',
+    '*/lib2to3/tests/data/false_encoding.py',
+    '*/lib2to3/tests/data/py2_test_grammar.py',
+    '*.debug-gdb.py',
+]
+
+
+def bytecode_expected(path):
+    path = Path(path[len(RPM_BUILD_ROOT):])
+    for glob in not_compiled:
+        if path.match(glob):
+            return False
+    return True
+
+
+failed = 0
+compiled = (path for path in sys.argv[1:] if bytecode_expected(path))
+for path in compiled:
+    to_check = (cache_from_source(path, optimization=opt) for opt in LEVELS)
+    f_mtime = os.path.getmtime(path)
+    for pyc in to_check:
+        c_mtime = os.path.getmtime(pyc)
+        if c_mtime < f_mtime:
+            print('Failed bytecompilation timestamps check: '
+                  f'Bytecode file {pyc} is older than source file {path}',
+                  file=sys.stderr)
+            failed += 1
+
+if failed:
+    print(f'\n{failed} files failed bytecompilation timestamps check.',
+          file=sys.stderr)
+    sys.exit(1)