code: def test_formatting_empty():
      formatted = Markup("{}").format(0)
      assert formatted == Markup("0")
  
imports: import pytest
  from markupsafe import escape
  from markupsafe import escape_silent
  from markupsafe import Markup
  from markupsafe._compat import PY2
  from markupsafe._compat import text_type
label_desc: Use image node_id 10 for calling a global function with example usage: test_formatting_empty() without return types