How to make a classification one against all?

Question

Python

Good day, I couldn’t google the solution
Let’s say there is one class, and you need to determine how likely it is for one object to belong to this class, that is, a kind of classification one against all
Interested in the implementation with svm, but this method assumes the presence of at least two classes
How can solve such a problem when you need to check whether an object belongs to only one class?

Answer 1

Just a binary response(Нет) 0 ....... 1 (Да)