Writing code to access agile octopus rest API in python 3 on a raspberry pi

Question

Octopus give an example of the command needed to access their API:

curl -u "sk_live_************************:" "https://api.octopus.energy/v1/products/AGILE-18-02-21/electricity-tariffs/E-1R-AGILE-18-02-21-M/standard-unit-rates/"

The ************************ represents what will be my password or unique key

My code is:

import urllib.request

curlplusurl = 'curl -u "sk_live_************************:" "https://api.octopus.energy/v1/products/AGILE-18-02-21/electricity-tariffs/E-1R-AGILE-18-02-21-M/standard-unit-rates/"'

with urllib.request.urlopen(curlplusurl) as response 
    answer = response.read()

I get the following error:

raise URLError('unknown url type: %s' % type)

urllib.error.URLError: urlopen error unknown url type: curl -u "sk_live_************************

the bit with the password/unique key is vital - so how do I give it if I can't do it the way Octopus describe?