efficient way of accessing values in a tuple (python)

Question

i have a function that returns a tuple of

x = (1, 2, 3, 4, 5, 6, 7, 8, 9)

i also have a class that requires 10 total args (including self)

i want the tuple to be able to populate the args in the class, but if i just put

y = Class(x)

it returns the error

> TypeError: __init__() takes exactly 10 arguments (2 given)

i know it would be possible to just use

y = Class(x[0], x[1], ... x[8])

but that seems awfully long winded. is there some better method of doing this?

Answer 1

Use the asterisk to unpack argument lists

Class(*x)

Answer 2

You need to unpack it:

>>> def foo(a, b, c, d, e, f, g, h, i, j):
...     return a
... 
>>> x = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
>>> foo(*x)
1