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NI-ModInst Python API

Project description

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master branch status

Build Status - master branch Documentation Status - master branch MIT License Test Coverage - master branch

GitHub status

Open Issues + Pull Requests Open Pull Requests


Python bindings for NI Modular Instrument drivers. See GitHub for the latest source.




The nimi-python repository generates Python bindings (Application Programming Interface) for interacting with the Modular Instrument drivers. The following drivers are supported:

  • NI-DCPower (Python module: nidcpower)

  • NI-Digital Pattern Driver (Python module: nidigital)

  • NI-DMM (Python module: nidmm)

  • NI-FGEN (Python module: nifgen)

  • NI-ModInst (Python module: nimodinst)

  • NI-SCOPE (Python module: niscope)

  • NI Switch Executive (Python module: nise)

  • NI-SWITCH (Python module: niswitch)

  • NI-TClk (Python module: nitclk)

It is implemented as a set of Mako templates and per-driver metafiles that produce a Python module for each driver. The driver is called through its public C API using the ctypes Python library.

nimi-python supports all the Operating Systems supported by the underlying driver.

nimi-python follows Python Software Foundation support policy for different versions. At this time this includes Python 3.6 and above using CPython.

NI-ModInst Python API Status

NI-ModInst (nimodinst)

Driver Version Tested Against

2022 Q3

PyPI Version

Latest NI-ModInst Version

Supported Python Version

NI-ModInst supported Python versions

Open Issues

Open Issues + Pull Requests for NI-ModInst

Open Pull Requests

Pull Requests for NI-ModInst


As a prerequisite to using the nimodinst module, you must install the NI-ModInst runtime on your system. Visit to download the driver runtime for your devices.

The nimi-python modules (i.e. for NI-ModInst) can be installed with pip:

$ python -m pip install nimodinst~=1.4.2

Or easy_install from setuptools:

$ python -m easy_install nimodinst


We welcome contributions! You can clone the project repository, build it, and install it by following these instructions.


The following is a basic example of using the nimodinst module to retrieve information on all High Speed Digitizers currently in the system.

import nimodinst
with nimodinst.Session("niscope") as session:
    for device in session:
        print("{: >20} {: >15} {: >10}".format(device.device_name, device.device_model, device.serial_number))

Other usage examples can be found on GitHub.

Support / Feedback

The packages included in nimi-python package are supported by NI. For support, open a request through the NI support portal at

Bugs / Feature Requests

To report a bug or submit a feature request specific to NI Modular Instruments Python bindings (nimi-python), please use the GitHub issues page.

Fill in the issue template as completely as possible and we will respond as soon as we can.

For hardware support or any other questions not specific to this GitHub project, please visit NI Community Forums.


Documentation is available here.


nimi-python is licensed under an MIT-style license (see LICENSE). Other incorporated projects may be licensed under different licenses. All licenses allow for non-commercial and commercial use.

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