• Pip version: 10
• Python version: any
• Operating system: any

Description:

This is a feature request, related to #3568 and 4824, but made more necessary by the privatization of pip's internals: let pip show gain a --json flag (or --format=(humanreadable|json)) (also handling pip show --files) that outputs the result as json (or whatever other format you deem suitable, but pip list already has --format=json (hence the suggestion of --format=json instead of --json above). Otherwise, it becomes necessary to either parse the output of pip show, or to just copy-paste pip's implementation, in order to access the same metadata.

What I've run:

e.g.

pip show pip