pygraph

pygraph is an extremely simple CLI tool for using graphviz. It takes a file to write to and adjacency list to construct the graph from. The intended use case is for generating small graphs to embed in things like homework problems. The API is documented via the --help option

Examples

pygraph -d tree ab ac bd be

pygraph -u -e neato circle ab bc cd de ea

pygraph -d -n "Sample Tree" labeled-tree root-left:1 root-right:1 left-child:4 right-child:3 root-root:0

Usage

$ pygraph --help
Usage: pygraph [OPTIONS] FILE EDGES...

Options:
  -e, --engine [dot|neato|twopi|circo|fdp|sfdp|patchword|osage]
                                  Choose layout engine to use
  -u, --undirected / -d, --directed
                                  Specify undirected or directed edges
  --format TEXT                   Image format
  -n, --name TEXT                 Name of graph in image
  --dot                           Preserve the source dot file
  --no-vertex-labels              Don't label vertex labels
  --help                          Show this message and exit.

Installation

pip install pygraph-cli

Syntax

• First argument is file to save to without extension
• Pairs of single characters after are interpreted as creating an edge between the them (eg: ab ac cd)
• Nodes can have any name when separated by - (eg: root-child)
• To label the edge, append : and any text (eg: root-child:label)
• Name the image by passing -n option
• To keep the original dot source, pass --dot