Process of proposing (new) specifications may not sufficiently clearly explained

From https://discuss.python.org/t/adding-a-default-extra-require-environment/4898/48?u=pradyunsg

I found this: https://www.pypa.io/en/latest/specifications/#proposing-new-specifications but honestly it’s quite confusing and not really helpful.

I try to understand:

• How to obtain a PEP number ?
• Where should I go to open the PEP ?
• Is the PR to " Python Packaging User Guide repository" the PEP itself ? Or it’s a completely different process and shall be done once we have reached consensus in the PEP ?
• Is there a template I can follow ?

I feel that these are all legitimate questions about the process that we don't clarify well enough, and we should possibly clarify each of these points in/near the "Proposing new specifications" section.

Inizia leggendo la sezione "Proposing new specifications" collegata nell'issue e confrontala con le quattro domande sollevate. Aggiorna la guida in modo che spieghi come ottenere un numero PEP, dove aprire una PEP, in che modo il PR di packaging.python.org si rapporta al processo PEP e se esiste un modello. Il lavoro è completato quando un nuovo contributore può seguire il processo senza la confusione citata.