DirectoryWalker.py 文件源码

def _create_writer(self, filedir, file, inreader: csv.DictReader) -> RF2DictWriter:
        outdir = filedir.replace(self._indir, self._outdir)
        os.makedirs(outdir, exist_ok=True)
        output_file = os.path.join(filedir.replace(self._indir, self._outdir), file)
        is_new = self._init or not os.path.exists(output_file)
        writer = RF2DictWriter(open(output_file, 'w' if is_new else 'a'),
                               fieldnames=inreader.fieldnames, dialect=csv.excel_tab)
        if is_new:
            writer.writeheader()
        return writer