How to extend a tuple of tuples?

[Sibylle Koczian]

Am 13.09.2016 um 12:09 schrieb Chris Angelico:
> On Tue, Sep 13, 2016 at 8:01 PM, Antoon Pardon
> <antoon.pardon at rece.vub.ac.be> wrote:
>>>
>> Then python seems to be broken:
>>
>> ]]] a = range(3)
>> ]]] old_a = a
>> ]]] a += [8, 13]
>> ]]] id(a), id(old_a)
>> (140062018784792, 140062018784792)
>> ]]] a, old_a
>> ([0, 1, 2, 8, 13], [0, 1, 2, 8, 13])
>
> A range object is not a tuple. Nor (since you were probably running
> this in Python 2) is a list.
>

Not probably, certainly (if it wasn't Python 1):

Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 
bit (AMD64)] on win32
Type "copyright", "credits" or "license()" for more information.
 >>> a = range(3)
 >>> a += [8, 13]
Traceback (most recent call last):
   File "<pyshell#1>", line 1, in <module>
     a += [8, 13]
TypeError: unsupported operand type(s) for +=: 'range' and 'list'
 >>>