Reschedule milestones on a new timeline


This is a standalone Python program that stretches or compresses milestones between new start and stop dates, keeping the time allocations for each the same, proportionally. It is not a regular Trac plugin.

It will probably work with Trac 0.10 and 0.9, all it depends on is the milestone table format.

Usage: [options]

Fit Trac milestone due dates into a new time range, preserving relative spacing

  -h, --help            show this help message and exit
  -D DBTYPE, --dbtype=DBTYPE
                        database type: sqlite (default), postgres, mysql
  -d DSN, --dsn=DSN     connect spec, eg. 'user=foo dbname=bar',
                        or a filename for sqlite systems
  -s START, --start=START
                        new start date YYYYMMDD
  -e END, --end=END     new end date YYYYMMDD
  -o OLD, --old=OLD     old start date YYYYMMDD
  -S SCHEMA, --schema=SCHEMA
                        name of schema containing milestone table
  -c, --commit          commit changes to table

As an example:

python --dsn 'user=someuser host=localhost dbname=trac' \
  --old 20071101 --start 20071203 --end 20090630 --dbtype postgres

would reschedule the milestones for a project that originally started 20071101 and ran until the due date of the last milestone to run instead between 20071203 and 20090630, which the same proportional allocation of time for each milestone.

Note: without the --commit flag it just prints a table showing what the changes would be, without altering the database. Always test it without the --commit flag first.

Bugs/Feature Requests

Note: the --dbtype flag is untested, I developed this for a PostgreSQL based system.

Existing bugs and feature requests for ReScheduleScript are here.

If you have any issues, create a new ticket.


Download the zipped source from here.


You can check out ReScheduleScript from here using Subversion, or browse the source with Trac.


General instructions on installing Trac plugins can be found on the TracPlugins page.

Recent Changes

8516 by rjollos on 2010-08-30 00:50:24
Added revision info to macro.
3541 by TerryBrown on 2008-04-22 15:20:45
Do not change completed milestones, added verbose flag and option to include rescheduling history in milestone description.
2828 by TerryBrown on 2007-11-27 04:30:01
Removing 0.10, didn't mean to create it


Author: TerryBrown
Maintainer: Terry Brown

Last modified 2 years ago Last modified on Apr 13, 2022, 6:50:48 AM