parsing tree from excel sheet

[MRAB]

On 2015-01-29 21:02, alb wrote:
> Hi Peter,
>
> Peter Otten <__peter__ at web.de> wrote:
> []
>>    def show2(self):
>>        yield str(self)
>>        for child in self.children:
>>            yield from child.show2()
>
> here is what I get:
>
>> SyntaxError: invalid syntax
>> debian at debian:example$ python3 export_latex.py doctree.csv
>>   File "export_latex.py", line 36
>>     yield from child.show2()
>>              ^
>> SyntaxError: invalid syntax
>
> and I've tried with both python and python3 (see below versions).
>
> debian at debian:example$ python
> Python 2.6.6 (r266:84292, Dec 27 2010, 00:02:40)
> [GCC 4.4.5] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>>
> debian at debian:example$ python3
> Python 3.1.3 (r313:86834, Nov 28 2010, 11:28:10)
> [GCC 4.4.5] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>>
>
> Is it an issue related to my installation? Shall I upgrade and/or
> downgrade?
>
"yield from" was introduced in Python 3.3.