[Python] IPython installation error: externally-managed-environment

Discussão em 'Python' iniciado por Stack, Março 22, 2025.

  1. Stack

    Stack Membro Participativo

    I need to install ipython on mac. My current python version is :

    myuser@blr resources % python3 --version
    Python 3.12.6
    myuser@blr resources % which python3
    /opt/homebrew/bin/python3


    Similar to this post (ipython installation on mac), I dont have Anacond on mac. Now trying to install ipython using pip3. When I try to install ipython, initially I was getting a error related a private / custom repository hosted on GCP. hence ran below command.

    pip3 install --isolated --index-url https://pypi.org/simple ipython


    Now getting below error ie "error: externally-managed-environment"

    myuser@blr resources % pip3 install --isolated --index-url https://pypi.org/simple ipython


    [notice] A new release of pip is available: 24.2 -> 25.0.1
    [notice] To update, run: python3.12 -m pip install --upgrade pip
    error: externally-managed-environment

    × This environment is externally managed
    ╰─> To install Python packages system-wide, try brew install
    xyz, where xyz is the package you are trying to
    install.

    If you wish to install a Python library that isn't in Homebrew,
    use a virtual environment:

    python3 -m venv path/to/venv
    source path/to/venv/bin/activate
    python3 -m pip install xyz

    If you wish to install a Python application that isn't in Homebrew,
    it may be easiest to use 'pipx install xyz', which will manage a
    virtual environment for you. You can install pipx with

    brew install pipx

    You may restore the old behavior of pip by passing
    the '--break-system-packages' flag to pip, or by adding
    'break-system-packages = true' to your pip.conf file. The latter
    will permanently disable this error.

    If you disable this error, we STRONGLY recommend that you additionally
    pass the '--user' flag to pip, or set 'user = true' in your pip.conf
    file. Failure to do this can result in a broken Homebrew installation.

    Read more about this behavior here: <https://peps.python.org/pep-0668/>

    note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
    hint: See PEP 668 for the detailed specification.


    I’m not looking to create a virtual environment. I'm trying to understand why this error is occurring and how to fix it.

    Continue reading...

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