# pyjoulescope [](https://download.joulescope.com/press/joulescope_logo-PNG-Transparent-Exact-Small.png) The most affordable and easy-to-use precision DC energy analyzer. Version ([Installation](https://docs.joulescope.com/en/software/pyjoulescope/user/install.md#install)) [](https://pypi.org/project/joulescope/)[](https://pypi.org/project/joulescope/)[](https://pypi.org/project/joulescope/)[](https://pypi.org/project/joulescope/) --- Welcome to the Joulescope™ driver’s documentation. This driver enables you to automate Joulescope operation and easily measure current, voltage, power and energy within your own Python programs on Windows, Linux, and macOS. With the Joulescope driver, controlling your Joulescope is easy. This example captures 0.1 seconds of data and then prints the average current and voltage: ```default import joulescope import numpy as np with joulescope.scan_require_one(config='auto') as js: data = js.read(contiguous_duration=0.1) current, voltage = np.mean(data, axis=0, dtype=np.float64) print(f'{current} A, {voltage} V') ``` Visit [joulescope.com](https://joulescope.com) to purchase a Joulescope. You can also [download](https://joulescope.com/download) the Joulescope UI. In addition to this documentation, you can: * Visit the [Joulescope support page](https://www.joulescope.com/pages/support) * Read the [Joulescope User’s Guide](http://download.joulescope.com/docs/JoulescopeUsersGuide/index.html) * Visit the [Joulescope forum](https://forum.joulescope.com/) * Submit issues on [GitHub](https://github.com/jetperch/pyjoulescope/issues) ## Table of Contents * [User Guide](https://docs.joulescope.com/en/software/pyjoulescope/user/index.md) * [Introduction](https://docs.joulescope.com/en/software/pyjoulescope/user/intro.md) * [Installation](https://docs.joulescope.com/en/software/pyjoulescope/user/install.md) * [Quick Start Guide](https://docs.joulescope.com/en/software/pyjoulescope/user/quickstart.md) * [License](https://docs.joulescope.com/en/software/pyjoulescope/user/license.md) * [CHANGELOG](https://docs.joulescope.com/en/software/pyjoulescope/user/changelog.md) * [API Guide](https://docs.joulescope.com/en/software/pyjoulescope/api/index.md) * [Device Discovery](https://docs.joulescope.com/en/software/pyjoulescope/api/discovery.md) * [Device](https://docs.joulescope.com/en/software/pyjoulescope/api/device.md) * [Stream Buffer API](https://docs.joulescope.com/en/software/pyjoulescope/api/stream_buffer.md) * [Stream Process API](https://docs.joulescope.com/en/software/pyjoulescope/api/streaming.md) * [Statistics API](https://docs.joulescope.com/en/software/pyjoulescope/api/statistics.md) * [Data File Module](https://docs.joulescope.com/en/software/pyjoulescope/api/datafile.md) * [Data Recorder Module](https://docs.joulescope.com/en/software/pyjoulescope/api/data_recorder.md) * [View](https://docs.joulescope.com/en/software/pyjoulescope/api/view.md) * [Transition to v1](https://docs.joulescope.com/en/software/pyjoulescope/api/transition_to_v1.md) ## Indices and tables * [Index](https://docs.joulescope.com/en/genindex.html) * [Module Index](https://docs.joulescope.com/en/py-modindex.html) * [Search Page](https://docs.joulescope.com/en/search.html)