input: def fix_syntax_errors(code_snippet: str) -> str:
      """ Detect and fix Python syntax errors in a given code snippet.
      >>> fix_syntax_errors("def test ():\\n    x = 5\\n    y = 3\\n    z\\n")
      "def test():\\n    x = 5\\n    y = 3\\n    try:\\n        z\\n    except NameError:\\n        print(\\"NameError: Name 'z' is not defined\\")\\n"
      """
output:     try:
          compile(code_snippet, '<string>', 'exec')
          return code_snippet
      except SyntaxError as e:
          if "invalid syntax" in str(e):
              code_snippet = code_snippet.replace("\\n", "\n")
              lines = code_snippet.split("\n")
              for i, line in enumerate(lines):
                  if "=" not in line and not line.strip().startswith("#"):
                      lines[i] = f"try:\n    {line}\nexcept NameError:\n    print(\"NameError: Name '{line.strip()}' is not defined\")"
              return "\n".join(lines)
          else:
              return code_snippet