[Python] Very simple request about argument setting.

There is an error in the syntax the star must prefix the variable name
not suffix it.
Then the items variable will accept the parameter value as a tuple.
It is not clear whether you want to accept a list variable or an
arbitrary number of values as parameter
to the function. So I will explain each case.
def ex(name,*items):
Here name, description and items can all accept lists as arguments.
Additionally items can accept arbitrary
number of arguments even of different types.
Ex:
ex([10,12],12,13.3,'Python')
No need u can pass a list directly into the call.

Hmm, tuples are immutable, right? I need something mutable so that when
the player picks up an item, it's no longer in the room.

Besides which, I've been playing with this whole thing in the
interactive interpreter:
... return x, foo
...
Traceback (most recent call last):
File "<interactive input>", line 1, in <module>
ValueError: need more than 2 values to unpack

I remember that two stars is for the second tuple, but how do I
distinguish between what var is for which tuple? I've tried using
brackets, braces, prenthisies, nothing seems to work. So what I am
doing wrong?

The thing is that the parameter 'bar' is actually a dictionary object
so the right way of calling shuf is then
x,foo,bar = shuf(1,2,3,4,5,a=6,b=7,c=8)

Thank you very much for your information.

the *args syntax is used to capture extra positional arguments, so you
can deal with them later. consider the following code:

def func(*args):
args.append(4)

func(1, 2, 3)

where do you expect the "4" to go?

if you want to *store* the items in an *instance* variable, you can
trivially convert it to a list by passing it to the list() function:

class Room:
def __init__(self, name, *items):
self.name = name
self.items = list(items)

r = Room("hall", "old shoe", "kitten", "vegetables")
r.items.append("a wallclock round in metal")
if you compare the return statement inside the function with the
assignment, do you see any notable differences?
if you're an expert on tutorials, surely you should be able to find one
and look this up in no time at all?

(the **bar syntax captures extra *keyword* arguments)
programming by trial and error?

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Hi,

The shuf() function returns two values: x and foo.
The command
becomes
So, this command assigns 2 values (x and foo) to 3 variables (x, foo
and bar), which raises that exception. I'm not sure why python says
"need more than 2
values to unpack" not "need 3 values" though.

Hope this help,
Rooy

probably because if you look at the call site

x,foo,bar=shuf(1,2,3,4,5,6,7,8)

it's more helpful to learn that "shuf" returned 2 values than to learn
that the code you're looking at requires three values.

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