Fix Assumption System - Githubissues

jessegrabowski / gEconpy

A collection of tools for working with DSGE models in python, inspired by the R package gEcon

https://geconpy.readthedocs.io/en/latest/index.html

GNU General Public License v3.0

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Fix Assumption System #1

Closed jessegrabowski closed 1 year ago

jessegrabowski commented 1 year ago

The assumptions block (used to set up sympy symbols and facilitate using sp.solve and sp.simplify) was previously broken. This PR:

Re-writes the parser used to extract the list of assumptions from the GCN file
Raises errors if invalid assumptions (including typos) are found

A new data structure, SymbolDictionary, is also added to:

Hold assumption information symbols
Facilitate conversion between string and Symbol representations of variables and parameters
Preserve assumption information when dictionaries are merged/copied/changed