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Project Description

The Python Simple Directed Graph whith Cicle Detector and TopoloGical sorter utilities.

Project Home Page

This project was be hosted on Github.

Authors

Install

Install it using the Python PIP Project.

pip install sdag2

Scripts

tsort.py

Sources from Standard Input:

echo -e 'C A\nA B\nB D\nC D' | tsort.py

Sources from another file:

echo -e 'C A\nA B\nB D\nC D' > verticies.txt
tsort.py verticies.txt

More Options:

tsort.py --help
Usage: tsort.py [options] [FILE [OUT_FILE]]

Options:
  -h, --help            show this help message and exit
  -f FILE, --file=FILE  With no FILE, or when FILE is -, read standard input.
  -o OUT_FILE, --out-file=OUT_FILE
                        Write result to OUT_FILE, default is standard output.
  -s SEP, --separator=SEP
                        Items separator, default is \s regex.
  -q QUIT_SEQ, --quit-sequence=QUIT_SEQ
                        Stop read FILE where line equals QUIT_SEQ, default is
                        :quit.

Tests

import unittest
from sdag2 import DAG, CycleDetectedException

class DAGTest(unittest.TestCase):
    def test_simple(self):
        '''
        Tests the verticles order in:

        C --> A --> B --> D
        '''

        dag = DAG()
        a = dag.add("A")
        b = dag.add("B")
        c = dag.add("C")
        d = dag.add("D")

        dag.add_edge(c, a)
        dag.add_edge(a, b)
        dag.add_edge(b, d)
        dag.add_edge(c, d)

        rs = dag.topologicaly()

        self.assertTrue(rs.index("C") < rs.index("A"))
        self.assertTrue(rs.index("A") < rs.index("B"))
        self.assertTrue(rs.index("B") < rs.index("D"))
        self.assertTrue(rs.index("C") < rs.index("D"))

    def test_cicle_detect(self):
        '''
        Tests the verticles order in:

        C --> A --> B --> D -> C
        '''

        dag = DAG()
        a = dag.add("A")
        b = dag.add("B")
        c = dag.add("C")
        d = dag.add("D")

        dag.add_edge(c, a)
        dag.add_edge(a, b)
        dag.add_edge(b, d)
        dag.add_edge(c, d)

        try:
            # add cicle at A --> C --> A
            dag.add_edge(a, c)
            raise Exception("Cycle not detected")
        except CycleDetectedException: pass

def main():
    unittest.main()

if __name__ == "__main__":
    main()
Release History

Release History

1.0.4

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

Donec et mollis dolor. Praesent et diam eget libero egestas mattis sit amet vitae augue. Nam tincidunt congue enim, ut porta lorem lacinia consectetur. Donec ut libero sed arcu vehicula ultricies a non tortor. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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1.0.3

History Node

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Changelog content for this version goes here.

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1.0.2

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
sdag2-1.0.4-py2.7.egg (14.6 kB) Copy SHA256 Checksum SHA256 2.7 Egg Aug 2, 2016
sdag2-1.0.4-py3.4.egg (15.2 kB) Copy SHA256 Checksum SHA256 3.4 Egg Aug 2, 2016
sdag2-1.0.4.tar.gz (7.1 kB) Copy SHA256 Checksum SHA256 Source Aug 2, 2016

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