Undocumented method for "slice" class

Documentation

The "slice" class has a method "indices" that, when given a length of a sequence, will return a tuple with (start, stop, step) that is adjusted for the length of that sequence. This method is completely undocumented

For example,

x=slice(0, 10, -2)
x.indices(5) #This returns (0, 4, -2)
x.indices(10) #This returns (0, 9, -2)
x.indices(100) #This returns (0, 9, -2)

The only example that I could find in any official Python documents is this, there is a single reference to this method at the bottom of the page. However, as of the lastest version of Python, which is 3.11.0 at the time of writing, using this method in a standard installation of CPython still works.

• PR: gh-99129

Comece pela página da documentação do Python para a classe slice, vinculada na issue, e examine como seus métodos estão documentados. Adicione a documentação de slice.indices(), incluindo seu argumento length, a tupla retornada e exemplos de comportamento; está concluído quando o método estiver descrito junto à classe e os exemplos estiverem corretos.