Re: [pysolar-discuss] Installation possible issue: Downloads Pysolar to wrong directory?

[Jay Doscher <jay@xxxxxxxxxxxxx>]

Thanks- I am still using an older release and Python2, which is working OK
for me now.  I will be updating my code soon for a newer project, but
here's what I have that works fine for me.

def getsolarangle():
        solarangle = Pysolar.GetAltitude(maplat, maplon,
datetime.datetime.utcnow())
        return solarangle


The code is in active use today, and the robot I am using it for can be
found here:
https://twitter.com/SolarRobot7

Thanks,
Jay

On Sat, Aug 8, 2015 at 11:26 AM, Brandon Stafford <brandon@xxxxxxxxxxxxxxx>
wrote:

> Hi Ryan and Jay,
>
> This reply is a couple of months late, but maybe it will help future users.
>
> To install Pysolar, you need to use pip3 rather than pip. Otherwise, it
> gets installed for Python 2, which doesn't work, and Python 3 can't find
> it. (When you ran into trouble, the installation instructions on
> http://pysolar.org were wrong. I just updated them.)
>
> Anyway, the proper installation command is: sudo pip3 install pysolar
>
> If you run into the error: "AttributeError: 'datetime.datetime' object has
> no attribute 'timestamp'", it is very likely that you are using a new
> version of Pysolar (newer than 0.6) that only works with Python 3. The
> fundamental problem here is that Python 3's datetime module can produce
> Unix timestamps natively, but Python 2's version can't. This is one of the
> reasons (maybe the only reason?) that Pysolar needs Python 3.
>
> If someone wanted to make Pysolar work with Python 2 again, the first step
> would be to figure out how to generate timestamps properly. You might start
> here:
> http://stackoverflow.com/questions/19801727/convert-datetime-to-unix-timestamp-and-convert-it-back-in-python
>
> Cheers,
> Brandon
>
> On Fri, Jun 12, 2015 at 6:08 PM, Jay Doscher <jay@xxxxxxxxxxxxx> wrote:
>
>> I'm running pysolar under 2.4, but I use this wording:
>>
>> import Pysolar
>>
>> My guess is that "Pysolar" is case sensitive.  Hope this helps,
>>
>> Jay
>>
>> On Thu, Jun 4, 2015 at 3:26 PM, Ryan Kapur <ryankapur@xxxxxxxxxxxx>
>> wrote:
>>
>>> I installed pysolar via "sudo pip install pysolar" and I have
>>> python3.4.2 on my 64-bit Ubuntu machine.
>>>
>>> Following along to the documentation, when I'm in python and I try:
>>>  *>>>from pysolar.solar import **
>>>  ImportError: No module named 'pysolar.solar'
>>>
>>> Pysolar automatically downloaded to
>>> /usr/local/lib/python2.7/dist-packages/pysolar
>>>
>>>
>>> ......................................................................................................
>>>
>>> To reiterate:
>>> When I ran python3 myprogram.py I get:
>>>
>>> *    from pysolar.solar import *ImportError: No module named
>>> 'pysolar.solar'*
>>>
>>> When I run python myprogram.py I get:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *Traceback (most recent call last):  File "tracker.py", line 22, in
>>> <module>    get_altitude(42.206, -71.382, d)  File
>>> "/home/ryankapur/.local/lib/python2.7/site-packages/pysolar/solar.py", line
>>> 58, in get_altitude    jd = time.get_julian_solar_day(when)  File
>>> "/home/ryankapur/.local/lib/python2.7/site-packages/pysolar/time.py", line
>>> 742, in get_julian_solar_day    +AttributeError: 'datetime.datetime' object
>>> has no attribute 'timestamp'*
>>>
>>>
>>> .......................................................................................................
>>>
>>> Why did Pysolar automatically download to the 2.7 directory? I moved it
>>> to the 3.4/dist_packages manually with nautilus but* it didn't work*.
>>> It only worked when I repeated this process after cloning the git
>>> repository.
>>>
>>> I hope this long message can provide some useful feedback because it was
>>> frustrating for me to figure out these import module errors--want to make
>>> sure others don't encounter this in the future. Cheers to Pysolar!
>>>
>>>
>>> Regards,
>>> Ryan
>>>
>>
>>
>
>
> --
> Brandon Stafford
> Rascal Micro: small computers for art and science
> Somerville, MA, USA
>