EPPP is a Python package for processing and analysing electronic simulation data.

It is very much work in progress and the documentation is currently lacking in many areas. Also, in this early stage of development, everything is subject to change. It is even somewhat likely that some of the current functionality will be stripped away or moved to another project.

EPPP comes as a python module but also defines a program, epppu, "EPPP utilities", that uses the module to provide a convenient command-line interface to some of the EPPP functionality. For example:

$ epppu make-resistance 88120
(220.0 k || (47.00 k + 100.0 k)) = 88.12 k

uses EPPPs resistance maker to generate an E6 resistor network with an equivalent resistance of 88.12 kΩ, while

$ epppu expression '10e3 // (47 + 2200)'
1.835 k

evaluates an expression which includes the parallel impedance operator, '//'. (The quotes in the example are used to avoid having to escape the parentheses. $ epppu expression 10e3 // \(47 + 2200\) would have been equally valid.)

The library provides, among many other things, functions for plotting Bode diagrams and extracting break frequencies from frequency response data.

Structure of sub-modules:

• eppp.calc: Mathematical operations and calculations as well as electronic circuit generation.
• eppp.inout: Reading input data and pretty printing.
• eppp.log: Control of the logging verbosity.
• eppp.plot: Generation of various plots using matplotlib. For example eppp.plot.bode generates a Bode plot.

Everything provided by the sub-modules are also imported into the root module.

epppu currently provides the following commands:

• epppu from-db
• epppu to-db
• epppu expression
• epppu parallel
• epppu make-resistance
• epppu reactance
• epppu susceptance
• epppu voltage-division
• epppu current-division
• epppu skin-depth
• epppu wavelength
• epppu wire-resistance
• epppu plates-capacitance

For documentation on the different commands use epppu <command> -h.

• python3
• python3-distutils
• python3-numpy
• python3-scipy
• python3-matplotlib (optional: required by eppp.plot)
• python3-dev (optional: performance boost for some functions through C bindings)

On Debian-based systems,

$ sudo aptitude install python3 python3-distutils python3-numpy python3-scipy python3-matplotlib libpython3-dev

should install all the dependencies.

To install run:

$ sudo make install

To change the install prefix add PREFIX=<prefix>. If you don't want to install the EPPP utilities, add INSTALL_EPPPU=0 and if you don't want bash completion for the EPPP utilities, add INSTALL_EPPPU_COMPLETION=0.

The logging verbosity can be set with the function eppp.log.set_log_level().

To run unit and performance tests, run:

$ make unit-test

For code profiling, run:

$ make profile

For benchmarking, run:

$ make benchmark