Hi Alexandre,

Stupid me! I had zesty in the sources.list :(
Sorry for this and thanks so much for your time.

Snehal

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-------- Original Message --------
On January 25, 2018 12:31 AM, Alexandre Hannud Abdo <[email protected]> wrote:

> Hi Snehal,
>
> I checked the release notes for 17.10 and Python 3.6 is indeed the default. 
> You shouldn't need to downgrade it.
>
> Can you check whether your graph-tool line in /etc/apt/sources.list is 
> pointing to "artful" and not another release? i.e.:
>
> deb http://downloads.skewed.de/apt/artful artful universe
>
> If this is correct, there seems to be an issue with how graph-tool was 
> compiled for 17.10, in which case you'd have to compile it yourself or wait 
> for the package to be fixed.
>
> Cheers,
>
> ale
> .~´
>
> On Wed, Jan 24, 2018 at 6:02 PM, Snehal Shekatkar 
> <[email protected]> wrote:
>
>> Sorry that I didn't provide everything that you asked for. Yes I am 
>> installing gt on newly installed Ubuntu17.10 and running `locate libpython`, 
>> among other things, gives me:
>>
>> /var/lib/dpkg/info/libpython3-dev:amd64.list
>> /var/lib/dpkg/info/libpython3-dev:amd64.md5sums
>> /var/lib/dpkg/info/libpython3-stdlib:amd64.list
>> /var/lib/dpkg/info/libpython3-stdlib:amd64.md5sums
>> /var/lib/dpkg/info/libpython3.6-dev:amd64.list
>> /var/lib/dpkg/info/libpython3.6-dev:amd64.md5sums
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.conffiles
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.list
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.md5sums
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.postinst
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.postrm
>> /var/lib/dpkg/info/libpython3.6-minimal:amd64.prerm
>> /var/lib/dpkg/info/libpython3.6-stdlib:amd64.list
>> /var/lib/dpkg/info/libpython3.6-stdlib:amd64.md5sums
>> /var/lib/dpkg/info/libpython3.6-stdlib:amd64.prerm
>> /var/lib/dpkg/info/libpython3.6:amd64.list
>> /var/lib/dpkg/info/libpython3.6:amd64.md5sums
>> /var/lib/dpkg/info/libpython3.6:amd64.shlibs
>> /var/lib/dpkg/info/libpython3.6:amd64.symbols
>> /var/lib/dpkg/info/libpython3.6:amd64.triggers
>>
>> Thus, the version 3.6 seems to be installed and I guess I need 3.5. Is that 
>> right?
>>
>> Sent with [ProtonMail](https://protonmail.com) Secure Email.
>>
>> -------- Original Message --------
>> On January 24, 2018 3:59 PM, Alexandre Hannud Abdo <[email protected]> 
>> wrote:
>>
>>> Well, I'll ask again: are you installing on a new clean install of Ubuntu?
>>>
>>> Also, the package you're having trouble with is not Python, it's libpython. 
>>> Do you have libpython installed? What version? Did you try reinstalling it?
>>>
>>> If you don't provide us with detailed information, we can't do much to help 
>>> you.
>>>
>>> .~´
>>>
>>> On Wed, Jan 24, 2018 at 4:51 PM, Snehal Shekatkar 
>>> <[email protected]> wrote:
>>>
>>>> Unfortunately, installing Python3.5 didn't help me. Still throws the same 
>>>> error.
>>>>
>>>> Sent with [ProtonMail](https://protonmail.com) Secure Email.
>>>>
>>>> -------- Original Message --------
>>>> On January 24, 2018 11:48 AM, Alexandre Hannud Abdo <[email protected]> 
>>>> wrote:
>>>>
>>>>> Ni! Hi Snehal,
>>>>>
>>>>> Do you mean you tried this command on a new clean install of Ubuntu, 
>>>>> nothing else been done previously to it? - other than enabling he PPA and 
>>>>> updating the system, I'd guess.
>>>>>
>>>>> Otherwise, this may not be related to graph-tool at all, you just need to 
>>>>> figure out why libpython is not installable.
>>>>>
>>>>> (Did you already try any solution after searching the net for the error 
>>>>> message? For example, reinstalling python3 and the respective libpython? 
>>>>> Or calling install with aptitude instead of apt?)
>>>>>
>>>>> Cheers,
>>>>> .~'
>>>>>
>>>>> On Wednesday, January 24, 2018, Snehal Shekatkar 
>>>>> <[email protected]> wrote:
>>>>>
>>>>>> Dear Tiago,
>>>>>>
>>>>>> I am trying to install graph-tool on ubuntu17.10 and I get the following 
>>>>>> error:
>>>>>>
>>>>>> sudo apt-get install python3-graph-tool
>>>>>>
>>>>>> The following packages have unmet dependencies:
>>>>>> python3-graph-tool : Depends: libpython3.5 (>= 3.5.0~b1) but it is not 
>>>>>> installable
>>>>>> E: Unable to correct problems, you have held broken packages.
>>>>>>
>>>>>> How can I fix this?
>>>>>>
>>>>>> Thank you
>>>>>>
>>>>>> Snehal M. Shekatkar
>>>>>> Pune
>>>>>> India
>>>>>> www.snehalshekatkar.com
>>>>
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>>
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