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:
- Device lifecycle and synchronous device models
- Transport/traffic management (Serial, VISA, TCP/IP)
- Command and operation solvers (for example SCPI and operation-message protocols)
- Parameter and function metadata systems
- 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
# replace the serial number P0000001 with that of your own 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:
- Base device model: operation entry points and parameter/function systems
- Command/operation solver: map standardized calls to protocol payloads
- Traffic manager: transport-specific I/O with real hardware
- 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.
1 maintainer
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