cppyy-cling

library6.32.8pypypi✓ verified 82d ago

Re-packaged Cling C++ interpreter, used as the JIT backend for cppyy. Provides the C++ runtime and interpreter for cppyy's automatic Python-C++ bindings. Version 6.32.8, released on 2025-05-26. Release cadence follows cppyy releases.

data

pip install cppyy-cling

package ↗homepage ↗

INSTALL

IMPORT

SIG · CPPYY-CLING

cppyy-cling

datapythonv6.32.8

Install

2.7s avg

Import

—

Disk

152MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v6.32.8 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

build_error

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 2.7s · import 0.000s · 154MB

152MB installed

● package 152MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

loader

✓ from cppyy_backend import loader

✗ import cppyy

Basic usage: import cppyy (which loads cppyy-cling backend), include a C++ header, and call C++ functions.

import cppyy cppyy.include('iostream') cppyy.gbl.std.cout << 'Hello from C++ via cppyy' << cppyy.gbl.std.endl

Debug

Known issues

gotchacppyy-cling is a separate package from cppyy. You must install cppyy-cling explicitly (or let cppyy install it as a dependency). If only cppyy is installed, the backend may be missing.

fix

pip install cppyy-cling

affects: all

gotchaDo not import cppyy_backend or cppyy_cling directly. The correct way to use the backend is through cppyy. cppyy auto-detects cppyy-cling.

fix

Use 'import cppyy' and then use cppyy functions.

affects: all

breakingIn cppyy-cling 6.32.x, the default C++ standard may be C++17. Code relying on C++11 or C++14 features might behave differently. Explicitly set standard with cppyy.add_include_path or cling flags.

fix

Use cppyy.cppdef('...') or pass -std=c++14 to cppyy.add_include_path via cppyy.load_library.

affects: >=6.32.0

Upgrade

Version history

6.32.8latest on PyPI · released Dec 17, 2024

Audit

Dependencies

cppyyrequiredcppyy-cling is the backend for cppyy; cppyy auto-detects it

Agent activity

10 hits · last 30 days

node

OpenAI (training)

Resources

packagehttps://pypi.org/project/cppyy-cling/ ↗

homepagehttps://root.cern.ch/cling ↗