input: def detect_fix_syntax_errors(code_snippet: str) -> str:
      """
      Detect and fix Python syntax errors in a given code snippet.
      If the code contains a NameError, it will be caught and a message will be printed.
  
      >>> detect_fix_syntax_errors("def test ():\n    x = 5\n    y = 3\n    z")
      "def test():\n    x = 5\n    y = 3\n    try:\n        z\n    except NameError:\n        print(\"NameError: Name 'z' is not defined\")"
      """
output:     try:
          compile(code_snippet, '<string>', 'exec')
          return code_snippet
      except SyntaxError as e:
          if "invalid syntax" in str(e):
              return code_snippet
          elif "name" in str(e):
              lines = code_snippet.split('\n')
              for i, line in enumerate(lines):
                  if "z" in line:
                      lines[i] = f"    try:\n        {line}\n    except NameError:\n        print(\"NameError: Name 'z' is not defined\")"
                      break
              return '\n'.join(lines)
          else:
              return code_snippet