...This is a good idead, however, there are many aspects arising from this:
* you'll yourself be responsible for this dictionary, including garbage collection (of in-dict variables) etc.
* there's no locality for variable variables, all are global within the dictionary, unless you locally define different dictionaries for this purpose
* you are more flexible, e.g. you can decide to overwrite existing variables or, alternatively, to raise an exception on overwriting (e.g. for const variables)
* if you want to rename a variable name, you'll have to do it manually
* ...
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