Description:

tasksched 0.5.0

Task scheduler with automatic resource leveling


The task scheduler reads one or more YAML or JSON
configuration files, that includes:

project general information
list of resources
list of tasks.

The output is a work plan, with the tasks automatically assigned to resources
("resource leveling"), as YAML format (or JSON).
The goal is to find the best possible end date (as soon as possible).
The internal algorithm follows these rules:

efficient use of resources, if possible 100%, with no overload at all
long tasks may be carried out in parallel by several people.

The work plan can be converted to text or HTML (see examples below).
Dependencies
Tasksched requires Python ≥ 3.7 and:

jinja2
python-holidays
pyyaml

You can install dependencies in a virtual environment with:
pip install -r requirements.txt

Usage
Input
The input data is written in YAML or JSON format.
One or more files are accepted, each one overwrites any file previously loaded.
The main keys in the input are:

project: project description (object, required)
resources: list of resources (list, required)
tasks: list of tasks (list, required)

The project keys are:

name: the project name (string, required)
start: the start date, auto-adjusted to the next business day if needed (for a JSON file, it must be a string with format YYYY-MM-DD) (default: today)
holidays: the country ISO code used to skip holidays in work plan (for the list of valid country ISO codes, see: python-holidays) (string)

For each resource, the keys are:

id: the resource id (string, required)
name: the resource name (string, default: same as id)

For each task, the keys are:

id: the task id (string, required)
title: the task title (string, default: same as id)
duration: the task duration in days, rounded to the next largest integer (if ≤ 0, the task is ignored) (float, required)
priority: the task priority: a higher priority uses the task first in the work plan, a negative number makes the task less urgent than the others (integer, default: 0)
max_resources: the max number of resources to use for this task (integer, default: 2)

Content of files can be read from standard input or filenames are allowed as
command line arguments. Both can be used at same time.
The command tasksched allows three main actions:

workplan: build an optimized work plan using project/resources/tasks info
in input; the output is YAML data (or JSON)
text: convert output of workplan action to text for display in the terminal
(colors and unicode chars are used by default but optional)
html: convert output of workplan action to HTML for display in a web browser
(template and CSS can be customized).

Two extra actions are available as shortcuts (build and convert work plan in a single action):

workplan_text: build the work plan and convert it to text for display in the terminal
(colors and unicode chars are used by default but optional)
workplan_html: build the work plan and convert it to HTML for display in a web browser
(template and CSS can be customized).

See examples of input files in the examples directory.
Examples
Standard input and multiple YAML files
You can pipe content of YAML/JSON files as tasksched input.
The following example uses:

another program called extract-tasks to extract tasks from a ticketing tool
a project configuration file (project.yaml)
a resources configuration file (team.yaml)
an extra-tasks configuration file, these tasks are added to the tasks received
on standard input (extra_tasks.yaml)

So you can build the work plan and convert it to text for display with this command:
$ extract-tasks | tasksched workplan project.yaml team.yaml extra_tasks.yaml | tasksched text

Or using the shortcut workplan_text:
$ extract-tasks | tasksched workplan_text project.yaml team.yaml extra_tasks.yaml

Build of work plan
Example of YAML work plan:
$ tasksched workplan examples/project_small.yaml
workplan:
project:
name: The small project
start: 2020-12-03
end: 2020-12-09
duration: 5
holidays_iso: FRA
holidays: []
resources_use: 70.0
resources:
- id: dev1
name: Developer 1
assigned:
- task: '1'
duration: 5
assigned_tasks:
- id: '1'
title: The first feature
duration: 5
end: 2020-12-09
use: 100.0
- id: dev2
name: Developer 2
assigned:
- task: '2'
duration: 2
assigned_tasks:
- id: '2'
title: The second feature
duration: 2
end: 2020-12-04
use: 40.0
tasks:
- id: '1'
title: The first feature
duration: 5
priority: 0
max_resources: 1
- id: '2'
title: The second feature
duration: 2
priority: 0
max_resources: 2

Work plan as text
Example of work plan converted to text for display:

Work plan as HTML
The generated HTML and CSS can be customized.
Tasksched comes with one default template and two default CSS:

template (using jinja2):

basic (source: basic.html)


CSS:

dark (used by default, source: dark.css)
light (source: light.css).



Example of work plan converted to HTML with the default "dark" theme:
$ tasksched workplan_html examples/project_big.yaml > tasksched.html

With "light" theme (white background):
$ tasksched workplan_html --css light examples/project_big.yaml > tasksched.html

Copyright
Copyright © 2020-2021 Sébastien Helleu
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see https://www.gnu.org/licenses/.

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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