| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY python2-download-http
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| 8 | "https://www.python.org/ftp/python/&python2-version;/Python-&python2-version;.tar.xz">
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| 9 | <!ENTITY python2-download-ftp " ">
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| 10 | <!ENTITY python2-md5sum "fd6cc8ec0a78c44036f825e739f36e5a">
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| 11 | <!ENTITY python2-size "12.2 MB">
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| 12 | <!ENTITY python2-buildsize "228 MB (add 17 MB for tests)">
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| 13 | <!ENTITY python2-time "0.5 SBU (Using parallelism=4; add 5.9 SBU for tests)">
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| 14 |
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| 15 | <!ENTITY python2htmldoc-download-http
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| 16 | "https://docs.python.org/ftp/python/doc/&python2-version;/python-&python2-version;-docs-html.tar.bz2">
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| 17 | ]>
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| 18 |
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| 19 | <sect1 id="python2" xreflabel="Python-&python2-version;">
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| 20 | <?dbhtml filename="python2.html" ?>
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| 21 |
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| 22 | <sect1info>
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| 23 | <date>$Date$</date>
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| 24 | </sect1info>
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| 25 |
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| 26 | <title>Python-&python2-version;</title>
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| 27 |
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| 28 | <indexterm zone="python2">
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| 29 | <primary sortas="a-Python2">Python2</primary>
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| 30 | </indexterm>
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| 31 |
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| 32 | <sect2 role="package">
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| 33 | <title>Introduction to Python 2</title>
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| 34 |
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| 35 | <para>
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| 36 | The <application>Python 2</application> package contains the
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| 37 | <application>Python</application> development environment. It is useful
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| 38 | for object-oriented programming, writing scripts, prototyping large
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| 39 | programs or developing entire applications. This version is for backward
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| 40 | compatibility with other dependent packages.
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| 41 | </para>
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| 42 |
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| 43 | <note>
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| 44 | <para>
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| 45 | Python2 has been deprecated by the upstream developers.
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| 46 | Support for Python2 was discontinued on January 1st, 2020.
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| 47 | </para>
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| 48 |
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| 49 | <para>
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| 50 | BLFS is attempting to use Python3 as much as possible, but some
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| 51 | packages have not been updated to support Python3.
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| 52 | </para>
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| 53 | </note>
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| 54 |
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| 55 | &lfs101_checked;
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| 56 |
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| 57 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 58 | <itemizedlist spacing="compact">
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| 59 | <listitem>
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| 60 | <para>
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| 61 | Download (HTTP): <ulink url="&python2-download-http;"/>
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| 62 | </para>
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| 63 | </listitem>
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| 64 | <listitem>
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| 65 | <para>
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| 66 | Download (FTP): <ulink url="&python2-download-ftp;"/>
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| 67 | </para>
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| 68 | </listitem>
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| 69 | <listitem>
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| 70 | <para>
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| 71 | Download MD5 sum: &python2-md5sum;
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| 72 | </para>
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| 73 | </listitem>
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| 74 | <listitem>
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| 75 | <para>
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| 76 | Download size: &python2-size;
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| 77 | </para>
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| 78 | </listitem>
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| 79 | <listitem>
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| 80 | <para>
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| 81 | Estimated disk space required: &python2-buildsize;
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| 82 | </para>
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| 83 | </listitem>
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| 84 | <listitem>
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| 85 | <para>
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| 86 | Estimated build time: &python2-time;
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| 87 | </para>
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| 88 | </listitem>
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| 89 | </itemizedlist>
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| 90 |
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| 91 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 92 |
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| 93 | <itemizedlist spacing="compact">
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| 94 | <listitem>
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| 95 | <para>
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| 96 | Required patch:
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| 97 | <ulink url="&patch-root;/Python-&python2-version;-security_fixes-1.patch"/>
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| 98 | </para>
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| 99 | </listitem>
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| 100 | <listitem>
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| 101 | <para>
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| 102 | Optional HTML Documentation: <ulink url="&python2htmldoc-download-http;"/>
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| 103 | </para>
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| 104 | </listitem>
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| 105 | </itemizedlist>
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| 106 |
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| 107 |
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| 108 | <bridgehead renderas="sect3">Python 2 Dependencies</bridgehead>
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| 109 | <!--
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| 110 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 111 | <para role="recommended">
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| 112 | <xref linkend="libffi"/>
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| 113 | </para>
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| 114 | -->
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| 115 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 116 | <para role="optional">
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| 117 | <xref linkend="bluez"/> and
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| 118 | <xref linkend="valgrind"/>
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| 119 | </para>
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| 120 |
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| 121 | <bridgehead renderas="sect4">Optional (For Additional Modules)</bridgehead>
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| 122 | <para role="optional">
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| 123 | <xref linkend="sqlite"/> and
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| 124 | <xref linkend="tk"/>
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| 125 | </para>
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| 126 |
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| 127 | <para condition="html" role="usernotes">
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| 128 | User Notes: <ulink url="&blfs-wiki;/Python"/>
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| 129 | </para>
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| 130 | </sect2>
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| 131 |
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| 132 | <sect2 role="installation">
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| 133 | <title>Installation of Python 2</title>
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| 134 | <!--
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| 135 | <caution>
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| 136 | <para>
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| 137 | After installing this package or
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| 138 | updating <application>pip2</application> with the command
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| 139 | <command>pip2 install - -upgrade pip</command>, it will remove
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| 140 | <application>pip3</application> installed in LFS. To reset
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| 141 | <application>pip</application> and <application>pip3</application>,
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| 142 | run, as the <systemitem class="username">root</systemitem> user:
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| 143 | </para>
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| 144 |
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| 145 | <screen role="nodump"><userinput>python3 -m pip install - -force pip</userinput></screen>
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| 146 | </caution>
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| 147 | -->
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| 148 | <para>
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| 149 | First, disable the installation of a script that overwrites a more
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| 150 | recent script:
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| 151 | </para>
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| 152 |
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| 153 | <screen><userinput>sed -i '/2to3/d' ./setup.py</userinput></screen>
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| 154 |
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| 155 | <para>
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| 156 | Install <application>Python 2</application> by running the following
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| 157 | commands:
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| 158 | </para>
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| 159 |
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| 160 | <screen><userinput>patch -Np1 -i ../Python-&python2-version;-security_fixes-1.patch &&
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| 161 | ./configure --prefix=/usr \
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| 162 | --enable-shared \
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| 163 | --with-system-expat \
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| 164 | --with-system-ffi \
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| 165 | --enable-unicode=ucs4 &&
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| 166 | make</userinput></screen>
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| 167 |
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| 168 | <para>
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| 169 | If you invoke the tests, they will run through twice.
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| 170 | To test the results, issue: <command>make -k test</command>.
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| 171 | </para>
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| 172 |
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| 173 | <para>
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| 174 | Now, as the <systemitem class="username">root</systemitem> user:
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| 175 | </para>
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| 176 |
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| 177 | <screen role="root"><userinput>make altinstall &&
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| 178 | ln -s python2.7 /usr/bin/python2 &&
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| 179 | ln -s python2.7-config /usr/bin/python2-config &&
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| 180 | chmod -v 755 /usr/lib/libpython&python2-majorver;.so.1.0</userinput></screen>
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| 181 |
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| 182 | <para>
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| 183 | Since <application>Python 2</application> is in maintenance mode, and
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| 184 | <application>Python 3</application> is recommended by upstream for
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| 185 | development, you probably do not need to install the documentation.
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| 186 | However, if you still want to install documentation for both
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| 187 | <application>Python</application> versions, be sure to define the
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| 188 | <envar>PYTHONDOCS</envar>
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| 189 | variable for the version you want to use, each time you need to consult
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| 190 | the documentation. If you have downloaded the preformatted documentation
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| 191 | from <ulink url="http://docs.python.org/download.html"/>, install it
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| 192 | as the <systemitem class="username">root</systemitem> user:
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| 193 | </para>
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| 194 |
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| 195 | <screen role="root"><userinput>install -v -dm755 /usr/share/doc/python-&python2-version; &&
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| 196 |
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| 197 | tar --strip-components=1 \
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| 198 | --no-same-owner \
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| 199 | --directory /usr/share/doc/python-&python2-version; \
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| 200 | -xvf ../python-&python2-version;-docs-html.tar.bz2 &&
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| 201 |
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| 202 | find /usr/share/doc/python-&python2-version; -type d -exec chmod 0755 {} \; &&
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| 203 | find /usr/share/doc/python-&python2-version; -type f -exec chmod 0644 {} \;</userinput></screen>
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| 204 | </sect2>
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| 205 |
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| 206 | <sect2 role="commands">
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| 207 | <title>Command Explanations</title>
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| 208 |
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| 209 | <para>
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| 210 | <parameter>--with-system-expat</parameter>: This switch enables linking
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| 211 | against system version of <application>Expat</application>.
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| 212 | </para>
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| 213 |
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| 214 | <para>
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| 215 | <parameter>--with-system-ffi</parameter>: This switch enables linking
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| 216 | against system version of <application>libffi</application>.
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| 217 | </para>
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| 218 |
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| 219 | <para>
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| 220 | <parameter>--enable-unicode=ucs4</parameter>: This switch enables
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| 221 | 32bit Unicode support in <application>Python</application>.
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| 222 | </para>
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| 223 |
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| 224 | <para>
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| 225 | <option>--with-ensurepip=yes</option> : This switch enables building
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| 226 | <command>pip</command> and <command>setuptools</command> packaging programs.
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| 227 | <command>setuptools</command> is needed for building some Python modules.
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| 228 | This switch is not recommended because this version of Python is being phased out.
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| 229 | </para>
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| 230 |
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| 231 | <para>
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| 232 | <option>--with-dbmliborder=bdb:gdbm:ndbm</option>: Use this switch
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| 233 | if you want to build <application>Python</application> DBM Module
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| 234 | against <application>Berkeley DB</application> instead of
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| 235 | <application>GDBM</application>.
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| 236 | </para>
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| 237 |
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| 238 | <para>
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| 239 | <command>make altinstall</command>: This make target omits some default
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| 240 | symbolic links that may interfere with Python 3.
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| 241 | </para>
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| 242 |
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| 243 | <para>
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| 244 | <command>chmod ...</command>: Fix permissions for libraries to be
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| 245 | consistent with other libraries.
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| 246 | </para>
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| 247 |
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| 248 | </sect2>
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| 249 |
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| 250 | <sect2 role="configuration">
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| 251 | <title>Configuring Python 2</title>
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| 252 |
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| 253 | <para>
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| 254 | In order for <command>python</command> to find the installed
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| 255 | documentation, you must add the following environment variable to
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| 256 | individual user's or the system's profile:
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| 257 | </para>
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| 258 |
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| 259 | <screen role="root"><userinput>export PYTHONDOCS=/usr/share/doc/python-&python2-version;</userinput></screen>
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| 260 |
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| 261 | </sect2>
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| 262 |
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| 263 | <sect2 role="content">
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| 264 | <title>Contents</title>
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| 265 |
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| 266 | <segmentedlist>
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| 267 | <segtitle>Installed Programs</segtitle>
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| 268 | <segtitle>Installed Library</segtitle>
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| 269 | <segtitle>Installed Directories</segtitle>
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| 270 |
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| 271 | <seglistitem>
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| 272 | <seg>
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| 273 | pydoc,
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| 274 | python2 (symlink),
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| 275 | python2-config (symlink),
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| 276 | python&python2-majorver;,
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| 277 | python&python2-majorver;-config,
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| 278 | smtpd.py, and
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| 279 | idle
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| 280 | </seg>
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| 281 | <seg>
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| 282 | libpython&python2-majorver;.so
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| 283 | </seg>
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| 284 | <seg>
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| 285 | /usr/{include,lib}/python&python2-majorver; and
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| 286 | /usr/share/doc/python-&python2-version;
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| 287 | </seg>
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| 288 | </seglistitem>
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| 289 | </segmentedlist>
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| 290 |
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| 291 | <variablelist>
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| 292 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 293 | <?dbfo list-presentation="list"?>
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| 294 | <?dbhtml list-presentation="table"?>
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| 295 |
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| 296 | <varlistentry id="idle">
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| 297 | <term><command>idle</command></term>
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| 298 | <listitem>
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| 299 | <para>
|
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| 300 | is a wrapper script that opens a <application>Python</application>
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| 301 | aware GUI editor. For this script to run, you must have installed
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| 302 | <application>Tk</application> before Python so that the Tkinter
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| 303 | Python module is built
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| 304 | </para>
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| 305 | <indexterm zone="python2 idle">
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| 306 | <primary sortas="b-idle">idle</primary>
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| 307 | </indexterm>
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| 308 | </listitem>
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| 309 | </varlistentry>
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| 310 |
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| 311 | <varlistentry id="pydoc2">
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| 312 | <term><command>pydoc</command></term>
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| 313 | <listitem>
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| 314 | <para>
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| 315 | is the <application>Python</application> documentation tool
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| 316 | </para>
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| 317 | <indexterm zone="python2 pydoc2">
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| 318 | <primary sortas="b-pydoc2">pydoc</primary>
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| 319 | </indexterm>
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| 320 | </listitem>
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| 321 | </varlistentry>
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| 322 |
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| 323 | <varlistentry id="python">
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| 324 | <term><command>python2</command></term>
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| 325 | <listitem>
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| 326 | <para>
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| 327 | is an interpreted, interactive, object-oriented programming
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| 328 | language
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| 329 | </para>
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| 330 | <indexterm zone="python2 python">
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| 331 | <primary sortas="b-python2">python</primary>
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| 332 | </indexterm>
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| 333 | </listitem>
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| 334 | </varlistentry>
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| 335 |
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| 336 | <varlistentry id="python2-ver">
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| 337 | <term><command>python&python2-majorver;</command></term>
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| 338 | <listitem>
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| 339 | <para>
|
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| 340 | is a version-specific name for the <command>python</command>
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| 341 | program
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| 342 | </para>
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| 343 | <indexterm zone="python2 python2-ver">
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| 344 | <primary sortas="b-python&python2-majorver;">python&python2-majorver;</primary>
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| 345 | </indexterm>
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| 346 | </listitem>
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| 347 | </varlistentry>
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| 348 |
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| 349 | <varlistentry id="smtpd.py">
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| 350 | <term><command>smtpd.py</command></term>
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| 351 | <listitem>
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| 352 | <para>
|
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| 353 | is an SMTP proxy implemented in <application>Python</application>
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| 354 | </para>
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| 355 | <indexterm zone="python2 smtpd.py">
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| 356 | <primary sortas="b-smtpd.py">smtpd.py</primary>
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| 357 | </indexterm>
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| 358 | </listitem>
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| 359 | </varlistentry>
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| 360 |
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| 361 | </variablelist>
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| 362 |
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| 363 | </sect2>
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| 364 |
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| 365 | </sect1>
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