PyLive

PyLive is a framework for querying and controlling Ableton Live from a standalone Python script, mediated via Open Sound Control. It is effectively an interface to the Live Control Surfaces paradigm, which means it can do anything that a hardware control surface can do, including:

query and modify global parameters such as tempo, volume, pan, quantize, arrangement time
query and modify properties of tracks, clips, scenes and devices
trigger and stop clips and scenes

It can perform most of the operations described in the LiveOSC OSC API.

FORK info

liblo is a pain to get installed on windows so replaced with easier library python-osc

Requirements

Ableton Live 9+
Python 2.6+
LiveOSC (fork): A maintained fork of the LiveOSC MIDI control script, updated to work with Live 9.6 and 10. Must be installed in Live's MIDI Remote Scripts (see README)

Installation

From PyPi:

pip install pylive

Via git:

git clone https://github.com/ideoforms/pylive.git
cd pylive
python setup.py install

To check that pylive is communicating successfully with Ableton Live, try running one of the examples, or run the test suite with:

python setup.py test

Usage

#------------------------------------------------------------------------
# Basic example of pylive usage: scan a Live set, trigger a clip,
# and modulate some device parameters.
#------------------------------------------------------------------------
import live
import random

#------------------------------------------------------------------------
# Scan the set's contents and set its tempo to 110bpm.
#------------------------------------------------------------------------
set = live.Set()
set.scan(scan_clip_names = True, scan_devices = True)
set.tempo = 110.0

#------------------------------------------------------------------------
# Each Set contains a list of Track objects.
#------------------------------------------------------------------------
track = set.tracks[0]
print("Track name %s" % track.name)

#------------------------------------------------------------------------
# Each Track contains a list of Clip objects.
#------------------------------------------------------------------------
clip = track.clips[0]
print("Clip name %s, length %d beats" % (clip.name, clip.length))
clip.play()

#------------------------------------------------------------------------
# We can determine our internal timing based on Live's timeline using
# Set.wait_for_next_beat(), and trigger clips accordingly.
#------------------------------------------------------------------------
set.wait_for_next_beat()
clip.get_next_clip().play()

#------------------------------------------------------------------------
# Now let's modulate the parameters of a Device object.
#------------------------------------------------------------------------
device = track.devices[0]
parameter = random.choice(device.parameters)
parameter.value = random.uniform(parameter.minimum, parameter.maximum)

Overview

To begin interacting with an Ableton Live set, the typical workflow is as follows. Live should normally be running on localhost, with LiveOSC enabled as a Control Surface.

Create a live.Set object.
Call set.scan(), which queries Live for an index of tracks, clip statuses, and (optionally) clip names and devices
Interact with Live by setting and getting properties on your Set:
- set.tempo, set.time, set.overdub are global Set properties
- set.tracks is a list of Track objects
- set.tracks[N].name, set.tracks[N].mute, are Track properties
- set.tracks[N].clips is a list of Clip objects (with empty slots containing None)
- set.tracks[N].devices is a list of Device objects
- set.tracks[N].devices[M].parameters is a list of Parameter objects

Getters and setters use Python's @property idiom, meaning that accessing set.tempo will query or update your Live set.

If you know that no other processes will interact with Live, set set.caching = True to cache properties such as tempo. This will query the Live set on the first instance, and subsequently return locally-stored values.

For further help, see pydoc live.

Classes

Set: Represents a single Ableton Live set in its entirety.
Track: A single Live track object. Contains Device and Clip objects. May be a member of a Group.
Group: A grouped set of one or more Track objects.
Device: An instrument or audio effect residing within a Track. Contains a number of Parameter objects.
Parameter: An individual control parameter of a Device, with a fixed range and variable value.

Limitations

Note that pylive is not intended for sending MIDI note events or control messages to a set. For MIDI controls, use a separate module such as mido.

louischaman / pylive