There are similar problems in R. See for example  https://github.com/joshuaulrich/quantmod/issues/149.  It might be worthwhile keeping an eye on what is being done in quantmod or other R packages. 

John C Frain
3 Aranleigh Park

On 18 May 2017 at 13:51, A. T. <artur.tarassow@googlemail.com> wrote:
That's a pitty, indeed. So the last alternative is using the
getQuandl-package which gets data from quandl.

Running the sample script, btw, returns an error of the type:
<output
In regard to function start_date (package getQuandl):
Warning: "$pd=1"
 obsolete use of "=" as Boolean test: please use "=="
</output>

Artur

Am 18.05.2017 um 12:17 schrieb Riccardo (Jack) Lucchetti:
> On Thu, 18 May 2017, guido giaume wrote:
>
>> Hi all
>> it seems yahoo download policies are suddenly changed.
>>
>> https://forums.yahoo.net/t5/Yahoo-Finance-help/Do-you-have-feedback-on-the-new-Finance-page/td-p/40107
>>
>>
>> https://stackoverflow.com/questions/tagged/yahoo-finance?page=2&sort=active&pagesize=15
>>
>>
>> creating lots of unhappy people.
>>
>
> It looks as if this is it. The syntax of the query has changed; this
> wouldn't be bad in itself, except for the fact that in order to download
> csv data, the server now requests a cookie, which obviously I wouldn't
> know how to generate automatically.
>
> Oh well, it was nice till it lasted.
>
> -------------------------------------------------------
>   Riccardo (Jack) Lucchetti
>   Dipartimento di Scienze Economiche e Sociali (DiSES)
>
>   Università Politecnica delle Marche
>   (formerly known as Università di Ancona)
>
>   r.lucchetti@univpm.it
>   http://www2.econ.univpm.it/servizi/hpp/lucchetti
> -------------------------------------------------------
>
>
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