input:                         
  def fix_syntax_errors(code_snippet: str) -> str:
      """Given a code snippet as a string, detect and fix Python syntax errors.
      The function should return the corrected code snippet.
      >>> 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):
              if "=" in code_snippet:
                  code_snippet = code_snippet.replace("=", "==")
              else:
                  code_snippet = code_snippet.replace("==", "=")
          elif "unexpected EOF" in str(e):
              code_snippet += "\n    pass"
          elif "name" in str(e):
              code_snippet = code_snippet.replace(str(e).split("'")[1], f"try:\n        {str(e).split('\'')[1]}\n    except NameError:\n        print(\"NameError: Name '{str(e).split('\'')[1]}' is not defined\")")
          return fix_syntax_errors(code_snippet)