March 21, 2022 - This tutorial aims to demonstrate how to quickly get started with Uproot, a Python package that can read and write files in the .root format without actually requiring or running the ROOT software at all (as opposed to PyROOT, which is just an interface in Python that runs ROOT behind the scenes).

In the past year, uproot has become one of the most widely used Python packages made for particle physics, with users in all four LHC experiments, theory, neutrino experiments, XENON-nT (dark matter direct detection), MAGIC (gamma ray astronomy), ...

Be sure to include tags for any other libraries that you use, such as Pandas or PyTorch. To ask questions in real time, try the Gitter Scikit-HEP/uproot chat room. Uproot is an ordinary Python library; you can get a copy of the code with

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.

ROOT I/O in pure Python and Numpy. uproot (originally μproot, for "micro-Python ROOT") is a reader and a writer of the ROOT file format using only Python and Numpy. Unlike the standard C++ ROOT implementation, uproot is only an I/O library, ...

ROOT I/O in pure Python and Numpy. uproot (originally μproot, for "micro-Python ROOT") is a reader and (someday) a writer of the ROOT file format using only Python and Numpy. Unlike the standard C++ ROOT implementation, uproot is only an I/O ...

This framework uses Python uproot and pandas/numpy to have no dependency on ROOT.

ROOT I/O in pure Python and Numpy. uproot (originally μproot, for "micro-Python ROOT") is a reader and a writer of the ROOT file format using only Python and Numpy. Unlike the standard C++ ROOT implementation, uproot is only an I/O library, ...

If you are migrating from an older ... see the Uproot 3 → 4+ cheat-sheet. If you need detailed descriptions of a class’s properties or a function’s parameters, see the left-bar on this site (≡ button on mobile) or use help in Python, ? or shift-tab in iPython/Jupyter. Report bugs, request features, and ask for additional documentation on GitHub ...

Command line python script to replicate bash tree command down to functions, variables, methods, etc - Shane-Burns-Dot-US/uproot

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.

git clone https://github.com/scikit-hep/uproot4.git · and install it locally by calling pip install . in the repository directory. If you need to develop Awkward Array as well, see its installation for developers. Uproot's only strict dependency is NumPy.

January 27, 2023 - Pythonic behaviors for non-I/O related ROOT classes. - scikit-hep/uproot3-methods

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.

August 19, 2026 - ROOT I/O in pure Python and NumPy. Last Updated · Aug 20, 2026 at 03:33 · License · BSD-3-Clause · Supported Platforms · noarch · Unsupported Platforms · linux-ppc64le Last supported version: 4.3.7 · macOS-arm64 Last supported version: 4.3.7 · linux-64 Last supported version: 4.3.7 · linux-aarch64 Last supported version: 4.3.7 · macOS-64 Last supported version: 4.3.7 · win-64 Last supported version: 4.3.7 · Home https://github.com/scikit-hep/uproot5 ·

As a last update (in this sprint, at least), I've released Uproot 4.1.1 (PyPI) with several writing-related performance bugs and one bug-bug fixed, all in PRs #426 and #428. The GitHub pages have some measurements with the code used to make them. A rule of thumb that comes out of this is that you want to call TTree.extend with no less than about 100 kB per array branch. At that point, the Pythonic overhead for writing TBasket metadata is in the noise:

June 28, 2023 - If this is a script, you may want to run python open_root_file.py every few lines or so to see the output. If this is a Jupyter notebook, you will want to put each snippet of code in its own cell and execute them as you go to see the output. import numpy as np import matplotlib.pylab as plt import uproot import awkward as ak

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.

Uproot is a library for reading and writing ROOT files in pure Python and NumPy.