code: def create_new_paste(contents: Union[str, bytes]) -> str:
      """Create a new paste using the bpaste.net service.
  
      :contents: Paste contents string.
      :returns: URL to the pasted contents, or an error message.
      """
      import re
      from urllib.request import urlopen
      from urllib.parse import urlencode
  
      params = {"code": contents, "lexer": "text", "expiry": "1week"}
      url = "https://bpa.st"
      try:
          response: str = (
              urlopen(url, data=urlencode(params).encode("ascii"))
              .read()
              .decode("utf-8")
          )
      except OSError as exc_info:  # urllib errors
          return "bad response: %s" % exc_info
      m = re.search(r'href="/raw/(\w+)"', response)
      if m:
          return f"{url}/show/{m.group(1)}"
      else:
          return "bad response: invalid format ('" + response + "')"
  
file_path: pytest/src/_pytest/pastebin.py
imports: import tempfile
  from io import StringIO
  from typing import IO
  from typing import Union
  import pytest
  from _pytest.config import Config
  from _pytest.config import create_terminal_writer
  from _pytest.config.argparsing import Parser
  from _pytest.stash import StashKey
  from _pytest.terminal import TerminalReporter
label_desc: Use image node_id 4 for calling a global function with example usage: create_new_paste(contents) and returns: url, str, m, unknown, unknown