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Building Python from source takes very little time and effort! Just follow these easy steps:
Clone the source repository
Make a shallow clone at the tip of the desired branch, 3.15 in this example.
To build a specific version, you’d specify a tag instead a branch, e.g.
--branch=v3.14.7.
$ git clone --depth=1 --branch=3.15 https://github.com/python/cpython.git
Configure, compile, and install
In this example, we’ll build a free-threaded interpreter. For a single-threaded
one you’d omit the --disable-gil option.
Omitting --enable-optimizations will also cause the tests to be skipped and
thus greatly speed up the build, though this not recommended. Compilation
without the tests typically takes around 10 seconds (!) on a modern 12-core
computer.
$ cd cpython
$ ./configure --enable-optimizations --disable-gil --prefix=$HOME/py315-nogil
$ make -j
$ make install
Update execution path
Your Python 3.15 binaries are now in ~/py315-nogil/bin. Add the directory to
your path and check the installation:
$ export PATH=$HOME/py315-nogil/bin:$PATH
$ python3 --version
$ python3 -m pip --version
That’s all! Your custom Python installation is now ready to use!