%general-entities; ]> Python &python-version;
&python-url;
 Python-&python-version; Python <para>The Python 3 package contains the Python development environment. It is useful for object-oriented programming, writing scripts, prototyping large programs, or developing entire applications.</para> <segmentedlist> <segtitle>&buildtime;</segtitle> <segtitle>&diskspace;</segtitle> <seglistitem> <seg>&python-fin-sbu;</seg> <seg>&python-fin-du;</seg> </seglistitem> </segmentedlist> </sect2> <sect2 role="installation"> <title>Installation of Python 3 Prepare Python for compilation: ./configure --prefix=/usr \ --enable-shared \ --with-system-expat \ --with-system-ffi \ --with-ensurepip=yes \ --enable-optimizations The meaning of the configure options: --with-system-expat This switch enables linking against system version of Expat. --with-system-ffi This switch enables linking against system version of libffi. --with-ensurepip=yes This switch enables building pip and setuptools packaging programs. --enable-optimizations This switch enables stable, but expensive, optimizations. Compile the package: make Running the tests at this point is not recommended. The tests are known to hang indefinitely in the partial LFS environment. If desired, the tests can be rerun at the end of this chapter or when Python 3 is reinstalled in BLFS. To run the tests anyway, issue make test. Install the package: make install If desired, install the preformatted documentation: install -v -dm755 /usr/share/doc/python-&python-version;/html tar --strip-components=1 \ --no-same-owner \ --no-same-permissions \ -C /usr/share/doc/python-&python-version;/html \ -xvf ../python-&python-version;-docs-html.tar.bz2 The meaning of the documentation install commands: and Ensure the installed files have the correct ownership and permissions. Without these options, using tar will install the package files with the upstream creator's values. Contents of Python 3 Installed Programs Installed Library Installed Directories 2to3, idle3, pip3, pydoc3, python3, and python3-config libpython&python-minor;.so and libpython3.so /usr/include/python&python-minor;, /usr/lib/python3, and /usr/share/doc/python-&python-version; Short Descriptions 2to3 is a Python program that reads Python 2.x source code and applies a series of fixes to transform it into valid Python 3.x code 2to3 idle3 is a wrapper script that opens a Python aware GUI editor. For this script to run, you must have installed Tk before Python so that the Tkinter Python module is built idle3 pip3 The package installer for Python. You can use pip to install packages from Python Package Index and other indexes pip3 pydoc3 is the Python documentation tool pydoc3 python3 is an interpreted, interactive, object-oriented programming language python3