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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % general-entities SYSTEM "../general.ent">
%general-entities;
]>
<sect1 id="ch-system-Python" role="wrap">
<?dbhtml filename="Python.html"?>
<sect1info condition="script">
<productname>Python</productname>
<productnumber>&python-version;</productnumber>
<address>&python-url;</address>
</sect1info>
<title>Python-&python-version;</title>
<indexterm zone="ch-system-Python">
<primary sortas="a-python">python</primary>
</indexterm>
<sect2 role="package">
<title/>
<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</title>
<para>Prepare Python for compilation:</para>
<screen><userinput remap="configure">./configure --prefix=/usr \
--enable-shared \
--with-system-expat \
--with-system-ffi \
--with-ensurepip=yes</userinput></screen>
<variablelist>
<title>The meaning of the configure options:</title>
<varlistentry>
<term><parameter>--with-system-expat</parameter></term>
<listitem>
<para>This switch enables linking against system version of
<application>Expat</application>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>--with-system-ffi</parameter></term>
<listitem>
<para>This switch enables linking against system version of
<application>libffi</application>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>--with-ensurepip=yes</parameter></term>
<listitem>
<para>This switch enables building <command>pip</command> and
<command>setuptools</command> packaging programs.</para>
</listitem>
</varlistentry>
</variablelist>
<para>Compile the package:</para>
<screen><userinput remap="make">make</userinput></screen>
<para>The test suite requires TK and X Windows session and cannot
be run until Python 3 is reinstalled in BLFS.</para>
<para>Install the package:</para>
<screen><userinput remap="install">make install
chmod -v 755 /usr/lib/libpython&python-minor;.so
chmod -v 755 /usr/lib/libpython3.so
ln -sfv pip&python-minor; /usr/bin/pip3</userinput></screen>
<variablelist>
<title>The meaning of the install commands:</title>
<!-- ====== Change 8m if Python minor version changes ======= -->
<varlistentry>
<term><command>chmod -v 755 /usr/lib/libpython3.{8.,}so</command></term>
<listitem>
<para>Fix permissions for libraries to be consistent with other
libraries.</para>
</listitem>
</varlistentry>
</variablelist>
<para>If desired, install the preformatted documentation:</para>
<screen><userinput remap="install">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</userinput></screen>
<variablelist>
<title>The meaning of the documentation install commands:</title>
<varlistentry>
<term><option>--no-same-owner</option> and --no-same-permissions</term>
<listitem>
<para>Ensure the installed files have the correct ownership and
permissions. Without these options, using <application>tar</application>
will install the package files with the upstream creator's values.
</para>
</listitem>
</varlistentry>
</variablelist>
</sect2>
<sect2 id="contents-python" role="content">
<title>Contents of Python 3</title>
<segmentedlist>
<segtitle>Installed Programs</segtitle>
<segtitle>Installed Library</segtitle>
<segtitle>Installed Directories</segtitle>
<seglistitem>
<seg>
2to3, idle3, pip3, pydoc3, python3, python3-config, and pyvenv
</seg>
<seg>
libpython&python-minor;.so and libpython3.so
</seg>
<seg>
/usr/include/python&python-minor;,
/usr/lib/python3, and
/usr/share/doc/python-&python-version;
</seg>
</seglistitem>
</segmentedlist>
<variablelist>
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>
<varlistentry id="python-2to3">
<term><command>2to3</command></term>
<listitem>
<para>
is a <application>Python</application> program that reads
<application>Python 2.x</application> source code and applies a
series of fixes to transform it into valid
<application>Python 3.x</application> code.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-2to3">2to3</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="idle3">
<term><command>idle3</command></term>
<listitem>
<para>
is a wrapper script that opens a <application>Python</application>
aware GUI editor. For this script to run, you must have installed
<application>Tk</application> before Python so that the Tkinter
Python module is built.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-idle3">idle3</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="pip3">
<term><command>pip3</command></term>
<listitem>
<para>
The package installer for Python. You can use pip to install
packages from Python Package Index and other indexes.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-pip3">pip3</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="pydoc3">
<term><command>pydoc3</command></term>
<listitem>
<para>
is the <application>Python</application> documentation tool.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-pydoc3">pydoc3</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="python3">
<term><command>python3</command></term>
<listitem>
<para>
is an interpreted, interactive, object-oriented programming
language.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-python3">python3</primary>
</indexterm>
</listitem>
</varlistentry>
<varlistentry id="pyvenv">
<term><command>pyvenv</command></term>
<listitem>
<para>
creates virtual <application>Python</application> environments in
one or more target directories.
</para>
<indexterm zone="ch-system-Python">
<primary sortas="b-pyvenv">pyvenv</primary>
</indexterm>
</listitem>
</varlistentry>
</variablelist>
</sect2>
</sect1>
|
