Discussion of sys module in Data Model

Documentation

In the section titled "I/O objects (also known as file objects)" in the Data Model chapter, it says:

The objects sys.stdin, sys.stdout and sys.stderr are initialized to file objects corresponding to the interpreter’s standard input, output and error streams; they are all open in text mode and therefore follow the interface defined by the io.TextIOBase abstract class.

However, neither the sys nor the io modules have been introduced (and probably should not be in this chapter). Is it appropriate to talk about module-specific features here? Or maybe this text should be modified to lean towards those objects just as examples of file objects?

從 Data Model 章節中的「I/O objects (also known as file objects)」部分開始，閱讀周圍的討論，以評估對 sys 和 io 的引用是否以適當的方式引入。完成的標準是釐清應保留這些特定於模組的範例，還是修改該段內容，僅將它們作為 file objects 的範例來呈現。