pySimpleWorkflow 0.4

manage a workflow written in csv

Workflow module

Description

The Workflow module manages a sequence, ie a list of steps which are linked together in a sequential way.
To define such a sequence, create a table in excel or csv file with columns named:

• stepId
• title
• nexts

stepId is the unique step identifier,
title is an arbitrary name of the step,
nexts is a list of stepIds that follows the step. The list is given by stepIds separated with '-' .

Here is an example:

stepId	title	nexts
1	my first step	2-3
2	my second step	4
3	step 3!	12
4	step4
9	step9	12-4
12	step12

In this example, steps 1 and 9 are the first steps in the workflow because the don't have any previous step.
Steps 4 and 12 are the last steps because they don't have any next step.

• Step 1 points to 2 next steps: steps 2 and 3,
• Step 2 points to step 4, ...

As we can see, there is no need to define a continuous suite fo stepIds and the identifiers don't need to be sorted.

Basic call example

import pandas as pd
from pycroaktools.workflow.workflow import Workflow
workflow = Workflow(pd.read_csv('workflow.csv'), 'myWorkflow') #read_csv may be replaced by read_excel
paths = workflow.getAllPaths()
for path in paths:
    for step in path:
        print(step.stepId)