解决并发执行冲突

[caoyicheng11]

在并发执行NormalizeFormula的时候，会遇到以下报错。

[Errno 2] No such file or directory: '/root/miniconda3/envs/3.7/lib/python3.7/site-packages/process_formula/tmp.temp.out'

这个报错是由于调用以下函数时，创建并删除tmp和tmp.temp.out，并发会出现冲突。

def get_normalize_formulas(self, after_content, mode) -> List[str]:
        temp_file = self.root_dir / "tmp"
        self.write_txt(temp_file, after_content)

        out_path = Path(temp_file).with_suffix(".temp.out")
        latex_js_path = self.root_dir / "preprocess_latex.js"
        cmd = "cat %s | node %s %s > %s " % (
            temp_file,
            latex_js_path,
            mode,
            out_path,
        )
        self.run_cmd(cmd)
        self.del_file(temp_file)

        out_content = self.read_txt(out_path)
        self.del_file(out_path)
        return out_content

为了解决改问题，我临时想到用uuid.uuid4()去解决冲突

def get_normalize_formulas(self, after_content, mode) -> List[str]:
        temp_id = uuid.uuid4()
        temp_file = self.root_dir / f"tmp_{temp_id}"
        self.write_txt(temp_file, after_content)

        out_path = Path(temp_file).with_suffix(".temp.out")
        latex_js_path = self.root_dir / "preprocess_latex.js"
        cmd = "cat %s | node %s %s > %s " % (
            temp_file,
            latex_js_path,
            mode,
            out_path,
        )
        self.run_cmd(cmd)
        self.del_file(temp_file)

        out_content = self.read_txt(out_path)
        self.del_file(out_path)
        return out_content

目前测试下来不会出现Error

[SWHL]

感谢指出。方便的话，提个PR吧，这样贡献者中也有您