What is PySpice ?

PySpice is a Python module which interface Python to the Ngspice and Xyce circuit simulators.

Where is the Documentation ?

The documentation is available on the PySpice Home Page.

What are the main features ?

• support Ngspice and Xyce circuit simulators
• support Linux, Windows and Mac OS X platforms
• licensed under GPLv3 therms
• implement an Ngspice shared library binding using CFFI which support external sources
• implement (partial) SPICE netlist parser
• implement an Oriented Object API to define circuit
• export simulation output to Numpy arrays
• plot using Matplotlib
• handle units
• work with Kicad schematic editor
• implement a documentation generator
• provides many examples

How to install it ?

Look at the installation section in the documentation.

V1.3.0 (development release)

V1.2.0 (production release) 2018-02-xx

• Initial support of the Xyce simulator. Xyce is an open source, SPICE-compatible, high-performance analog circuit simulator, capable of solving extremely large circuit problems developed at Sandia National Laboratories. Xyce will make PySpice suitable for industry and research use.
• Fixed OSX support
• Splitted G device
• Implemented partially A XSPICE device
• Implemented missing transmission line devices
• Implemented high level current sources Notice: Some classes were renamed !
• Implemented node kwarg e.g. circuit.Q(1, base=1, collector=2, emitter=3, model='npn')
• Implemented raw spice pass through (see User FAQ)
• Implemented access to internal parameters (cf. save @device[parameter])
• Implemented check for missing ground node
• Implemented a way to disable an element and clone netlist
• Improved SPICE parser
• Improved unit support:
  • Implemented unit prefix cast U_μV(U_mV(1)) to easily convert values
  • Added U_mV, ... shortcuts
  • Added Numpy array support to unit, see UnitValues Notice: this new feature could be buggy !!!
  • Rebased WaveForm to UnitValues
• Fixed node order so as to not confuse users Now PySpice matches SPICE order for two ports elements !
• Fixed device shortcuts in Netlist class
• Fixed model kwarg for BJT Notice: it must be passed exclusively as kwarg !
• Fixed subcircuit nesting
• Outsourced documentation generator to Pyterate
• Updated setup.py for wheel

V1.1.0 2017-09-06

• Enhanced shared mode
• Shared mode is now set as default on Linux

V1.0.0 2017-09-06

• Bump version to v1.0.0 since it just works!
• Support Windows platform using Ngspice shared mode
• Fixed shared mode
• Fixed and completed Spice parser : tested on example's libraries

V0.4.2

• Fixed Spice parser for lower case device prefix.

V0.4.0 2017-07-31

• Git repository cleanup: filtered generated doc and useless files so as to shrink the repository size.
• Improved documentation generator: Implemented format for RST content and Tikz figure.
• Improved unit support: It implements now the International System of Units. And we can now use unit helper like u_mV or compute the value of 1.2@u_kΩ / 2@u_mA. The relevant documentation is on this page.
• Added the Simulation instance to the Analysis class.
• Refactored simulation parameters as classes.

V0.3.2 2017-02-22

• fixed CCCS and CCVS

V0.3.1 2017-02-22

• fixed ngspice shared

V0.3.0 2015-12-08

• Added an example to show how to use the NgSpice Shared Simulation Mode.
• Completed the Spice netlist parser and added examples, we could now use a schematic editor to define the circuit. The program cir2py translates a circuit file to Python.

V0 2014-03-21

Started project