econgrapher 0.1.1

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econgrapher

A Python package for drawing economic graphs using the turtle library.

Elements

Element (base class)

Abstract base class. All elements inherit from this and implement render(turtle: Turtle).

Label(text, pos, font)

Draws text at a position.

• text: string to display
• pos: (x, y) tuple
• font: ("FontName", size, "style") — default ("Helvetica", 24, "bold")

Line(start, end, style)

Draws a line between two points.

• start, end: (x, y) tuples
• style: "solid" or "dashed" (default "solid")

Axes(x_label, y_label, font)

Creates a coordinate system with perpendicular axes.

• x_label: default "Q"
• y_label: default "P"

Tags(axes, sub, inter, font)

Marks an intersection point with dashed lines to axes and labels.

• axes: an Axes instance
• sub: subscript string (e.g., "1", "e")
• inter: (x, y) intersection point

Usage

from turtle import Turtle
from econgrapher import Axes, Line, Label, Tags

t = Turtle()

# Draw axes
axes = Axes("Q", "P")
axes.render(t)

# Draw a demand curve
demand = Line((-100, 100), (100, -100))
demand.render(t)

# Mark equilibrium point
tags = Tags(axes, "e", (0, 0))
tags.render(t)