plesty-lib 0.2.4

A library for the Plesty ecosystem.

PlestyLib

PlestyLib is the core Python library in the PLESTY ecosystem for building standardized device APIs for laboratory and experimental automation.

It provides reusable abstractions for:

1. Device lifecycle and synchronous device models
2. Transport/traffic management (Serial, VISA, TCP/IP)
3. Command and operation solvers (for example SCPI and operation-message protocols)
4. Parameter and function metadata systems
5. Auto testing helpers, logging, and error-handling utilities

Requirements

• Python 3.12+

Installation

Install from package index:

pip install plesty-lib
# or 
uv add plesty-lib

For development, install from source and sync the dev dependency group:

uv sync --group dev
# or
pip install -e .
pip install plesty-sdk

Quick Start

1. Create a device class from a base device

from plesty.lib.device.base_visa_scpi_device import BaseVisaScpiDevice


class PowermeterDevice(BaseVisaScpiDevice):
	def __init__(self, address: str):
		super().__init__(address)
		self.register_config("POWER", dtype=float, read_only=True, command="MEAS:SCAL:POW")
		self.register_config("WAVELENGTH", dtype=int, unit="nm", command="SENS:CORR:WAV")

2. Use the device

address = "USB0::0x1313::0x8078::P0000001::INSTR"

with PowermeterDevice(address) as dev:
	print(dev.identity())
	print(dev.query("POWER"))

Architecture Overview

PlestyLib encourages a layered device API design:

1. Base device model: operation entry points and parameter/function systems
2. Command/operation solver: map standardized calls to protocol payloads
3. Traffic manager: transport-specific I/O with real hardware
4. Optional wrappers: async and TCP/IP service/client patterns

This separation keeps implementations testable and easier to maintain.

License

Plesty is licensed under the GNU Lesser General Public License v3.0 or later (LGPL-3.0-or-later). See the LICENSE file.