The glossary of `parameter` should also explain `required parameter` and `optional parameter` in addition to the 5 parameters

[hyperkai]

I find there are 2 kinds of parameters as shown below:

• The required parameter like p1 which must get an argument from a function call because it doesn't have a default value.
• The optional parameter like p2, *args or **kwargs which optionally gets an argument from a function call because it has a default value.

def func(p1, p2='World'):
    print(p1, p2)

func(p1='Hello')
# Hello World

def func(*args, **kwargs):
    print(args, kwargs)

func()
# () {}

So, the glossary of parameter should also explain required parameter and optional parameter in addition to the 5 parameters as shown below:

... There are seven kinds of parameter:

• positional-or-keyword: ...
• positional-only: ...
• keyword-only: ...
• var-positional: ...
• var-keyword: ...
• required: ...
• optional: ...

[skirpichev]

There is no such notion. Parameters can specify optional and required arguments, as well as default values for some optional arguments.