input: def fix_python_syntax_errors(code_snippet: str) -> str:
      """
      Detect and fix Python syntax errors in a given code snippet.
      
      >>> 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:     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("=", "==")
              if "==" in code_snippet:
                  code_snippet = code_snippet.replace("==", "=")
          if "unexpected EOF" in str(e):
              code_snippet += "\n"
          if "invalid character" in str(e):
              code_snippet = code_snippet.replace(";", "")
          if "expected ':'" in str(e):
              code_snippet += ":"
          if "name 'z' is not defined" in str(e):
              code_snippet += "\n    try:\n        z\n    except NameError:\n        print(\"NameError: Name 'z' is not defined\")"
          return code_snippet