2 name space errors about py-xbrl HOT 4 CLOSED

The taxonomy (STPR 2021) that the parser can not find is in draft and not officially released.
See https://www.sec.gov/structureddata/osddrafttaxonomyfiles
I am not quite sure why these two submissions use this taxonomy, however I will add it to the mapping :)

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Why doesn't the recursion include base taxonomy downloads?
The lib already knows what's missing, so we wouldn't need to hardcode the new docs every year.

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The libary does indeed automatically download and parse all taxonomies that are imported in the respective taxonomy schema files.
However some filers (expecially from the US) do not import the taxonomies.

They declare the namespace:

<xbrli:xbrl xmlns:dei="http://xbrl.sec.gov/dei/2020-01-31">...</xbrli:xbrl>

but the following schema import is missing:

<xs:import 
  namespace="http://xbrl.sec.gov/dei/2020-01-31" 
  schemaLocation="https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd"/>

Using a namespace without declaring the schema url for the taxonomy behind the namespace is bad practice. But the SEC tolerates this for the following standard taxonomies:
https://www.sec.gov/info/edgar/edgartaxonomies.shtml

Therefore the mapping is used in case the filing lacks the appropriate mapping between namespace and schema url.

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When we extract the imports cannot we just try to add the declared namespaces too?
(at least the ones that look like URL) Just make it universal.

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