I will take a break from requesting installations of new packages unless
there will be something so much needed (I can for the time being report on
dependencies for the already installed packages, if any). Here are packages
I used locally, hoping they can benefit others on Sage Cell Server:

1. SpicePy: pip install spiceypy (https://pypi.org/project/spiceypy/ -- an
essential tool for scientists and engineers alike in the planetary science
field for Solar System Geometry).

2. Theano: pip install Theano: (https://pypi.org/project/spiceypy/ -- for
defining, optimizing, and efficiently evaluating mathematical expressions
involving multi-dimensional arrays).

3. Xarray: pip install xarray (This has some optional dependencies,
http://xarray.pydata.org/en/stable/installing.html) - I actually need it
because I wanted to play with some weather data from GitHub, Scipy netcdf
fails to open and read the files, and the alternative to that seems to be
xarray.

Kind regards,

Elimboto


On Tue, Jan 12, 2021 at 11:38 AM Elimboto Yohana <[email protected]> wrote:

> Hi Andrey,
>
> I tested,
>
> from flask import Flask
> import dash
>
> server = Flask(__name__)
>
> and got the same error as before (with Dash application) "AttributeError:
> 'DummyMod' object has no attribute 'startswith'".
>
> Since Dash is written on top of Flask, Plotly. js, and React. js, the
> error seems to be related to Python Flask, it may have to do with the
> environment variable settings:
> https://stackoverflow.com/questions/31431755/flask-error-attributeerror-nonetype-object-has-no-attribute-startswith
> .
>
> Kind regards,
>
> Elimboto
>
> On Mon, Jan 11, 2021 at 4:55 AM Andrey Novoseltsev <[email protected]>
> wrote:
>
>> Hi Elimboto,
>>
>> No idea what is happening here, it is installed via pip just like other
>> packages - if you figure out what exactly does it want, please do let me
>> know!
>>
>> Best,
>> Andrey
>>
>> On Sunday, 3 January 2021 at 10:46:47 UTC-7 [email protected] wrote:
>>
>>> I also got another error "AttributeError: 'DummyMod' object has no
>>> attribute 'startswith'" when testing Dash:
>>>
>>> import dash
>>> import dash_core_components as dcc
>>> import dash_html_components as html
>>>
>>> app = dash.Dash()
>>>
>>> The error is caused by the last line, "app =...". It may have something
>>> to do with setting the environment variable.
>>>
>>> Kind regards,
>>>
>>> Elimboto
>>>
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>>
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