code: def write_html_wrappers():
      html = """
      <a href="$">$</a><br>
      """
  
      files = list(output.glob("*.whl"))
      assert len(files) == 1, files
      [wheel] = files
  
      this_html = html.replace("$", wheel.name)
      output_wrapper = output / "download.html"
      if output_wrapper.exists():
          contents = output_wrapper.read_text()
          if this_html not in contents:
              with open(output_wrapper, "a") as f:
                  f.write(this_html)
      else:
          output_wrapper.write_text(this_html)
  
file_path: vissl/dev/packaging/vissl_pip/publish.py
imports: import os
  import subprocess
  from pathlib import Path
label_desc: Use image node_id 4 for calling a global function with example usage: write_html_wrappers() without return types