%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-ch6-sbu;</seg> <seg>&python-ch6-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 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. Compile the package: make The test suite requires TK and and X Windows session and cannot be run until Python 3 is reinstalled in BLFS. Install the package: make install chmod -v 755 /usr/lib/libpython&python-minor;m.so chmod -v 755 /usr/lib/libpython3.so The meaning of the install commands: chmod -v 755 /usr/lib/libpython3.{7m.,}so Fix permissions for libraries to be consistent with other libraries. 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 --no-same-permissions 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, pydoc3, python3, python3-config, pyvenv libpython&python-minor;m.so and libpython3.so /usr/include/python&python-minor;m, /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 pydoc3 is the Python documentation tool. pydoc3 python3 is an interpreted, interactive, object-oriented programming language. python3 pyvenv creates virtual Python environments in one or more target directories. pyvenv