| """用 3.8 的语法版本解析全仓 .py，判断「Python 3.8 兼容」是真声明还是口号。 |
| |
| 只查语法（ast.parse 的 feature_version），不查运行时 API：3.8 上被移除/新增的标准库 |
| 行为差异（如 dict 顺序、zoneinfo）无法靠语法发现，那一层仍要靠真机 CI。 |
| """ |
| from pathlib import Path |
| import ast |
| import os |
| import sys |
|
|
| ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) |
| SKIP_DIRS = {".git", "__pycache__", ".venv", "venv", "build", "dist", "_shots"} |
| TARGET = (3, 8) |
|
|
|
|
| def main(): |
| bad = [] |
| total = 0 |
| for base, dirs, files in os.walk(ROOT): |
| dirs[:] = [d for d in dirs if d not in SKIP_DIRS] |
| for name in files: |
| if not name.endswith(".py"): |
| continue |
| path = os.path.join(base, name) |
| total += 1 |
| try: |
| src = Path(path).read_text(encoding="utf-8") |
| ast.parse(src, filename=path, feature_version=TARGET) |
| except SyntaxError as exc: |
| bad.append((os.path.relpath(path, ROOT), exc.lineno, exc.msg)) |
| print("parsed=%d py38_syntax_failures=%d" % (total, len(bad))) |
| for row in bad[:20]: |
| print(" FAIL %s:%s %s" % row) |
| return 1 if bad else 0 |
|
|
|
|
| if __name__ == "__main__": |
| sys.exit(main()) |
|
|
