Download protected files from S3 using urllib package, instead of requests (tutorial1/2)

[jjmcnelis]

https://github.com/podaac/AGU-2020/tree/main/Part-II/01_sst_shpfile

When using the tutorial linked above, I had to use the urllib package for the data file download from S3.

Right now, I get a 401 Unauthorized here with requests.get method:

r = requests.get(modis_url)
with open('tutorial1_data_MODIS.nc', 'wb') as f:
    f.write(r.content)

That's using the requests library. If I use this instead it downloads with the authenticated session managed by urllib:

import shutil
with request.urlopen(modis_url) as response, open('tutorial2_data_MODIS.nc', 'wb') as out_file:
    print('Content Size:', response.headers['Content-length'])
    shutil.copyfileobj(response, out_file)
    print("Downloaded request to tutorial2_data_MODIS.nc")

The second download method works for me, but not the first.