input: def fix_python_syntax_errors(code_snippet: str) -> str:
      """ Given a code snippet as a string, detect and fix Python syntax errors. Specifically,
      convert incomplete or incorrect code syntax to valid Python code.
      For example, incomplete lines like 'z' should be wrapped in a try-except block.
      >>> fix_python_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:     lines = code_snippet.split('\n')
      fixed_lines = []
      for line in lines:
          if line.strip() and not line.strip().endswith(':'):
              fixed_lines.append(f"try:\n    {line}\nexcept NameError:\n    print(\"NameError: Name '{line.strip()}' is not defined\")")
          else:
              fixed_lines.append(line)
      return '\n'.join(fixed_lines)