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principle-viz

principle-viz is a Python package for Principles of Economics market analysis and diagrams. It focuses on linear demand and supply models, with separate modules for solving, policy, welfare decomposition and plotting.

Basic market equilibrium drawn with principle-viz
Documented version 0.10.0
Python 3.10 or later
Depends on mosaickit (>=0.5.1,<0.6.0)
Command line principle-viz
Source github.com/EconViz/principle-viz
License MIT

What it covers

  • Market equilibrium from linear demand and supply, or from discrete unit schedules
  • Comparative statics: shifts of demand or supply, and the move from the old equilibrium to the new one
  • Taxes (fixed, per-unit, ad valorem, on buyers or sellers) and subsidies
  • Price ceilings, price floors and the minimum wage
  • Welfare decomposition: consumer and producer surplus, tax revenue, deadweight loss
  • International trade (free trade, tariffs, quotas), externalities, common resources, public goods, loanable funds, the production possibilities frontier and elasticity
  • Market demand and supply as the horizontal sum of individual curves or schedules
  • Textbook-style figures built on mosaickit
  • A command line interface with JSON output

Next steps

  • Installation

    Install the package with pip or uv.

    Installation

  • Quick start

    Solve a market, compare a tax, and draw a figure.

    Quick start

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