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# Choosing a Python Interpreter

The `gcloud` CLI runs under Python. Note that `gcloud` supports Python version
3.9-3.14. Certain Windows and Linux installs include a bundled Python
interpreter depending on the package and architecture. Similarly, Intel-based
Macs offer the option to install CPython as part of the main install script.
Otherwise, you must have a Python interpreter available on your system. The
`gcloud` CLI will attempt to locate an interpreter on your system PATH by
looking for the following binaries:

    * python3
    * python

If you have a bundled Python installed, it will be preferred. To override this
you will need to set the `CLOUDSDK_PYTHON` environment variable, see below.

Other Python tools shipped in the Google Cloud CLI do not support Python 3 and
require Python 2.7.x, including:

    * `dev_appserver`

# Bundled Python on Linux

Linux-based installs include a bundled Python installation on x86_64
architectures. This installation will be used by default. If you want to use a
different Python installation, set the `CLOUDSDK_PYTHON` environment variable
to the absolute path to your python interpreter.

If you have multiple Python interpreters available (including a bundled
python) or if you don't have one on your PATH, you can specify which
interpreter to use by setting the `CLOUDSDK_PYTHON` environment variable. For
example:

  # Use the python3 interpreter on your path

  $ export CLOUDSDK_PYTHON=python3


  # Use a python you have installed in a special location

  $ export CLOUDSDK_PYTHON=/usr/local/my-custom-python-install/python

`gsutil` versions 5.0 and later support Python 3.9-3.13. To use a different
interpreter for `gsutil` than for the other Python tools, set the
`CLOUDSDK_GSUTIL_PYTHON` environment variable to the interpreter that you
want.

`bq` versions 2.0.99 and later support Python 3.9-3.14. To use a different
interpreter for `bq` than for the other Python tools, set the
`CLOUDSDK_BQ_PYTHON` environment variable to the interpreter that you want.

# Configuring the Python Interpreter

While not typically necessary, you can pass interpreter level
arguments to the Python running `gcloud` using the `CLOUDSDK_PYTHON_ARGS`
environment variable.

A common use case for this (which has been special-cased) is to enable
'site packages'. This allows Python to pick up libraries from the system (
for example, those that may have been installed with `pip`). Site packages may
be necessary if you require certain native libraries (as is the case if you
work with service accounts using a legacy `.p12` key, for example). To enable
site packages, set `CLOUDSDK_PYTHON_SITEPACKAGES=1`. Note that enabling site
packages may cause conflicts with `gcloud` packaged libraries, depending on
what you have installed on your system.


# Setting Configurations and Properties

Your active configuration can also be set via the environment variable
`CLOUDSDK_ACTIVE_CONFIG_NAME`. This allows you to specify a certain
configuration in a given terminal session without changing the global
default configuration.

In addition to being able to set them via `gcloud config set`,
each `gcloud` property has a corresponding environment variable. They take
the form: `CLOUDSDK_SECTION_PROPERTY`. For example, if you wanted to
change your active project for just one terminal you could run:

  $ export CLOUDSDK_CORE_PROJECT=my-project

For more information, see `gcloud topic configurations`.
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