In Java you can define a new class inline using anonymous inner classes. This is useful when you need to rewrite only a single method of the class.
Suppose that you want create a subclass of OptionParser that overrides only a single method (for example exit()). In Java you can write something like this:
new OptionParser () {
public void exit() {
// body of the method
}
};
This piece of code creates a anonymous class that extends OptionParser and override only the exit() method.
There is a similar idiom in Python? Which idiom is used in these circumstances?
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