Instantiate a model from a URL that points to a INP file

[aerispaha]

Who's got the time to mAnUaLly download a SWMM file?

It would be cool if we could instantiate a swmmio Model by passing in a URL to a SWMM model somewhere on the internet. This could make our docs a little more concise, and also make it easier to run tests against models that are hosted in other GitHub repos.

For example, instead of having to manually download a SWMM model from a Github repo before working with it in swmmio, we could do something like this:

# url to an awesome inp file in another repo
url_to_inp = 'https://raw.githubusercontent.com/SWMMEnablement/NCIMM-Black-White-Box/25a7dc8fc58f67d15954679f294d09b9061766a4/SWMM5_NCIMM/10070_H_Elements.inp'

# instantiate as usual 
model = swmmio.Model(url_to_inp)
model.links.geodataframe.plot('Geom1', linewidth=model.links.dataframe['Geom1'])

This can be achieved pretty easily by downloading the model file to a temp location, then instantiating the swmmio.Model. Something like this, inside the swmmio.Model.__init__ :

# write some logic to validate that the in_file_path is a valid URL
if in_file_path is url: 
    # then download to a temp directory and instantiate from there
    r = requests.get(in_file_path)
    temp_path = f'{tempfile.gettempdir()}/10070_H_Elements.inp'
    with open(temp_path, 'wb') as f:
        f.write(r.content)

    self.inp(temp_path)
    ...