pertchart 0.5

PERT chart generator

pertchart

The purpose of his application is to automatically generate pert chart from tasks in json file.

Installation

pip install pertchart

Usage

from pertchart import PertChart

pc = PertChart()
tasks = pc.getInput(path_to_inputfile)
pc.create_pert_chart(pc.calculate_values(tasks))

Example Input Data File

The data file contains task tuples one per line as in the following sample:

{
  "T1.1": {
    "Tid": "T1.1",
    "start": 0,
    "duration": 1,
    "end": 0,
    "responsible": "Responsible1",
    "pred": ["START"]
  },
  "T1.2": {
    "Tid": "T1.2",
    "start": 0,
    "duration": 3,
    "end": 0,
    "responsible": "Responsible2",
    "pred": ["T1.1"]
  },
  "T1.3": {
    "Tid": "T1.3",
    "start": 0,
    "duration": 3,
    "end": 0,
    "responsible": "Responsible3",
    "pred": ["T1.1"]
  },
  "T1.4": {
    "Tid": "T1.4",
    "start": 0,
    "duration": 2,
    "end": 0,
    "responsible": "Responsible4",
    "pred": ["T1.2"]
  },
  "T1.5": {
    "Tid": "T1.5",
    "start": 0,
    "duration": 2,
    "end": 0,
    "responsible": "Responsible5",
    "pred": ["T1.3"]
  },
  "T1.6": {
    "Tid": "T1.6",
    "start": 0,
    "duration": 1,
    "end": 0,
    "responsible": "Responsible6",
    "pred": ["T1.4"]
  },
  "T1.7": {
    "Tid": "T1.7",
    "start": 0,
    "duration": 3,
    "end": 0,
    "responsible": "Responsible7",
    "pred": ["START"]
  },
  "T1.8": {
    "Tid": "T1.8",
    "start": 0,
    "duration": 0,
    "end": 0,
    "responsible": "Responsible8",
    "pred": ["T1.5","T1.6","T1.7"]
  },
  "END": {
    "Tid": "END",
    "start": 0,
    "duration": 0,
    "end": 0,
    "responsible": "Responsible",
    "pred": ["T1.8"]
  }
}

Exacmple Output PERT chart for th eabove input data

Credits and References

• http://www.graphviz.org/pdf/dotguide.pdfbtree.pyFigure13
• https://stackoverflow.com/questions/35064304/runtimeerror-make-sure-the-graphviz-executables-are-on-your-systems-path-aft
• https://www.programcreek.com/python/example/104476/graphviz.Digraph
• https://graphviz.readthedocs.io/en/stable/examples.html#structs-py