Allow global namespace

[iamanigeeit]

Every code block runs in its own scope currently, so if i have multiple code blocks on a single page i have to redefine everything above. So:

def hello():
    print('Hello')

Then:

hello()

will not work.

I understand this is by design (brython-dev/brython#690) but for documents we should enable global namespace.

I patched this in brython_runner.py

window.__BRYTHON__.user_namespace = {}
ns = window.__BRYTHON__.user_namespace

before def run().

[lebalz]

I understand the issue and i know a global ns
could be handy. But it could introduce unwanted and hard to debug sideeffects.

A solution could be probably be possible in userland through the meta-commets: https://lebalz.github.io/docusaurus-live-brython/docs/meta-comments - so you could either define needed functionality in the PRE section, or even save the global ns to a window variable in the POST section (as you do in your run implementation), and the load this config in the PRE section...