Returns a writable file-like object suitable for streaming output.
fd : file path string or writable file-like object
May be: a file path, in which case it is opened, and the file object is returned. an object with a :meth:write method, in which case that object is returned.
May be:
a file path, in which case it is opened, and the file object is returned. an object with a :meth:write method, in which case that object is returned.
compressed : bool, optional
If True, create a gzip-compressed file. (Default is False).
fd : writable file-like object