Java中的close（）相当于什么？

Question

In Java, using the close() method frees resources by removing out of scope objects. I am confused as to what is the Python equivalent for this?

• Does Python's garbage collector automatically do this?
• Is it the del method?
• Should I use the with statement?

Any help will be appreciated.

Edit: My goal is to explicitly remove class objects when desired, not file objects.

Answer 1

Should I use the with statement?

Yes, according to the documentation :

It is good practice to use the with keyword when dealing with file objects. This has the advantage that the file is properly closed after its suite finishes, even if an exception is raised on the way. It is also much shorter than writing equivalent try-finally blocks:

Answer 2

你会在这里找到你的答案：在你的代码之前放置gc.collect（）。

Answer 3

ICart's comment is spot on for many different situations. However, regarding the creation and disposal of objects in general, I think this other thread provides a pretty good explanation of how python handles their objects (reference counts), and where garbage collection comes in.