import io
import yaml

text = io.BytesIO( b"%TAG ! tag:%002:\n---")
events = list(yaml.parse(text))
output = yaml.emit(events)

  File "/rep.py", line 6, in <module>
    output = yaml.emit(events)
  File "lib/python3.9/site-packages/yaml/__init__.py", line 172, in emit
    dumper.emit(event)
  File "lib/python3.9/site-packages/yaml/emitter.py", line 115, in emit
    self.state()
  File "lib/python3.9/site-packages/yaml/emitter.py", line 176, in expect_first_document_start
    return self.expect_document_start(first=True)
  File "lib/python3.9/site-packages/yaml/emitter.py", line 193, in expect_document_start
    prefix_text = self.prepare_tag_prefix(prefix)
  File "lib/python3.9/site-packages/yaml/emitter.py", line 575, in prepare_tag_prefix
    chunks.append('%%%02X' % ord(ch))
TypeError: ord() expected string of length 1, but int found