line 219 in elasticsearch/client/__init__.py (bytes error)

This line is

def _bulk_body(self, body):
        # if not passed in a string, serialize items and join by newline
        if not isinstance(body, string_types):
            body = '\n'.join(map(self.transport.serializer.dumps, body))

        # bulk body must end with a newline
        if not body.endswith('\n'):
            body += '\n'

        return body

In the section checking for the \n endswith only accepts bytes so this needs to be b’\n’.

[daniel-gallagher]

I think you may have wanted to tag @danielmitterdorfer?

[danielmitterdorfer]

Thanks for the feedback. Unfortunately I am swamped with work at the moment so it might take a while until I get to it. I can keep an eye on the issue though and can look into submitting a PR when things get more quiet again.