Feature request: copy_records_to_file

I would like to request a version of copy_records_to_table that will produce a PGCOPY format file.

Parameters:

• output – A path-like object, or a file-like object, or a coroutine function that takes a bytes instance as a sole argument.
• records – An iterable returning row tuples to copy into the file.
• columns (list) – An optional list of column names to copy.
• schema_name (str) – An optional schema name to qualify the table.
• timeout (float) – Optional timeout value in seconds.

Thanks!

首先阅读现有的 copy_records_to_table 实现以及 PostgreSQL COPY/PGCOPY 格式的要求。定义 output、records、columns、schema_name 和 timeout 参数应如何工作，然后验证生成的文件是有效的 PGCOPY 数据，并支持列出的输出形式。