GDSFactory+

1.8.5 verified Mon Apr 27 auth: no python

GDSFactory+ extends the open-source GDSFactory with proprietary tools for foundry PDKs, simulations, and verification (DRC/LVS). Current version is 1.8.5, requiring Python ~3.12.0. Release cadence is monthly.

pip install gdsfactoryplus

Common errors

error ModuleNotFoundError: No module named 'gdsfactoryplus' ↓

cause Missing installation or wrong Python environment.

fix

Run 'pip install gdsfactoryplus' in the correct environment (Python 3.12).

error gdsfactoryplus.exceptions.LicenseError: No valid license found ↓

cause License key missing or expired.

fix

Set the GDSFACTORYPLUS_KEY environment variable or pass license_key parameter.

error ImportError: cannot import name 'GDSFactoryPlus' from 'gdsfactoryplus' ↓

cause Old import style used after upgrade.

fix

Use 'from gdsfactoryplus import GDSFactoryPlus'.

Warnings

breaking Python 3.12 is required; Python 3.11 or older will fail to install. ↓

fix Upgrade Python to 3.12.x.

gotcha GDSFactory+ is NOT open-source; a valid license is needed for most features beyond basic geometry. ↓

fix Obtain a license from the vendor or use in evaluation mode with limited capabilities.

deprecated The old import 'import gdsfactoryplus' is deprecated; use explicit submodule imports. ↓

fix Change to 'from gdsfactoryplus import GDSFactoryPlus' or 'from gdsfactoryplus.components import ...'.

Imports

GDSFactoryPlus
wrong
```
import gdsfactoryplus
```
correct
```
from gdsfactoryplus import GDSFactoryPlus
```
Direct module import does not expose the main class; use explicit from import.
gdsfactoryplus.components
```
from gdsfactoryplus.components import mzi
```
Components are under the gdsfactoryplus.components submodule.

Quickstart

Initialize GDSFactory+ with a license key (optional for trial), then create and display a component.

import os
from gdsfactoryplus import GDSFactoryPlus

# Use environment variable for license key if required
gf = GDSFactoryPlus(license_key=os.environ.get('GDSFACTORYPLUS_KEY', ''))

# Create a simple MZI
from gdsfactoryplus.components import mzi
component = mzi()
component.show()