| 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 "30157d85a2c0479c09ea2cbe61f2aaf5">
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| 11 | <!ENTITY python2-size "12 MB">
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| 12 | <!ENTITY python2-buildsize "131 MB (add 15 MB for tests)">
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| 13 | <!ENTITY python2-time "0.7 SBU (Using parallelism=4; add 6.6 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 | <othername>$LastChangedBy$</othername>
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| 24 | <date>$Date$</date>
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| 25 | </sect1info>
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| 26 |
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| 27 | <title>Python-&python2-version;</title>
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| 28 |
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| 29 | <indexterm zone="python2">
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| 30 | <primary sortas="a-Python2">Python2</primary>
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| 31 | </indexterm>
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| 32 |
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| 33 | <sect2 role="package">
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| 34 | <title>Introduction to Python 2</title>
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| 35 |
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| 36 | <para>
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| 37 | The <application>Python 2</application> package contains the
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| 38 | <application>Python</application> development environment. It is useful
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| 39 | for object-oriented programming, writing scripts, prototyping large
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| 40 | programs or developing entire applications. This version is for backward
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| 41 | compatibility with other dependent packages.
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| 42 | </para>
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| 43 |
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| 44 | <note>
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| 45 | <para>
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| 46 | Python2 has been deprecated by the upstream developers.
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| 47 | Support for Python2 will be discontinued on January
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| 48 | 1st, 2020.
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| 49 | </para>
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| 50 |
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| 51 | <para>
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| 52 | BLFS is attempting to use Python3 as much as possible, but some
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| 53 | packages have not been updated to support Python3.
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| 54 | </para>
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| 55 | </note>
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| 56 |
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| 57 |
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| 58 | &lfs90_checked;
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| 59 |
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| 60 | <bridgehead renderas="sect3">Package Information</bridgehead>
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| 61 | <itemizedlist spacing="compact">
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| 62 | <listitem>
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| 63 | <para>
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| 64 | Download (HTTP): <ulink url="&python2-download-http;"/>
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| 65 | </para>
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| 66 | </listitem>
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| 67 | <listitem>
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| 68 | <para>
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| 69 | Download (FTP): <ulink url="&python2-download-ftp;"/>
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| 70 | </para>
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| 71 | </listitem>
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| 72 | <listitem>
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| 73 | <para>
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| 74 | Download MD5 sum: &python2-md5sum;
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| 75 | </para>
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| 76 | </listitem>
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| 77 | <listitem>
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| 78 | <para>
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| 79 | Download size: &python2-size;
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| 80 | </para>
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| 81 | </listitem>
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| 82 | <listitem>
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| 83 | <para>
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| 84 | Estimated disk space required: &python2-buildsize;
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| 85 | </para>
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| 86 | </listitem>
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| 87 | <listitem>
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| 88 | <para>
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| 89 | Estimated build time: &python2-time;
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| 90 | </para>
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| 91 | </listitem>
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| 92 | </itemizedlist>
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| 93 |
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| 94 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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| 95 |
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| 96 | <itemizedlist spacing="compact">
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| 97 | <title>Optional HTML Documentation</title>
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| 98 | <listitem>
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| 99 | <para>
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| 100 | Download (HTTP): <ulink url="&python2htmldoc-download-http;"/>
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| 101 | </para>
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| 102 | </listitem>
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| 103 | </itemizedlist>
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| 104 |
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| 105 | <bridgehead renderas="sect3">Python 2 Dependencies</bridgehead>
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| 106 | <!--
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| 107 | <bridgehead renderas="sect4">Recommended</bridgehead>
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| 108 | <para role="recommended">
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| 109 | <xref linkend="libffi"/>
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| 110 | </para>
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| 111 | -->
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| 112 | <bridgehead renderas="sect4">Optional</bridgehead>
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| 113 | <para role="optional">
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| 114 | <xref linkend="bluez"/> and
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| 115 | <xref linkend="valgrind"/>
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| 116 | </para>
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| 117 |
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| 118 | <bridgehead renderas="sect4">Optional (For Additional Modules)</bridgehead>
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| 119 | <para role="optional">
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| 120 | <xref linkend="sqlite"/> and
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| 121 | <xref linkend="tk"/>
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| 122 | </para>
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| 123 |
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| 124 | <para condition="html" role="usernotes">
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| 125 | User Notes: <ulink url="&blfs-wiki;/Python"/>
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| 126 | </para>
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| 127 | </sect2>
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| 128 |
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| 129 | <sect2 role="installation">
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| 130 | <title>Installation of Python 2</title>
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| 131 |
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| 132 | <caution>
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| 133 | <para>
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| 134 | If updating <application>pip2</application> with the command
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| 135 | <command>pip2 install --upgrade pip</command>, it will remove
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| 136 | <application>pip3</application> and the symlink
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| 137 | <application>pip</application> installed in LFS. To restore
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| 138 | <application>pip</application> and <application>pip3</application>,
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| 139 | run, as the <systemitem class="username">root</systemitem> user:
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| 140 | </para>
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| 141 |
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| 142 | <screen role="nodump"><userinput>python3 -m pip install --force pip</userinput></screen>
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| 143 | </caution>
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| 144 |
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| 145 | <para>
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| 146 | Install <application>Python 2</application> by running the following
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| 147 | commands:
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| 148 | </para>
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| 149 |
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| 150 | <screen><userinput>./configure --prefix=/usr \
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| 151 | --enable-shared \
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| 152 | --with-system-expat \
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| 153 | --with-system-ffi \
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| 154 | --with-ensurepip=yes \
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| 155 | --enable-unicode=ucs4 &&
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| 156 | make</userinput></screen>
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| 157 |
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| 158 | <para>
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| 159 | To test the results, issue: <command>make -k test</command>.
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| 160 | Three tests fail for unknown reasons.
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| 161 | </para>
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| 162 |
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| 163 | <para>
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| 164 | Now, as the <systemitem class="username">root</systemitem> user:
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| 165 | </para>
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| 166 |
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| 167 | <screen role="root"><userinput>make install &&
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| 168 | chmod -v 755 /usr/lib/libpython&python2-majorver;.so.1.0</userinput></screen>
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| 169 |
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| 170 | <para>
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| 171 | Since <application>Python 2</application> is in maintenance mode, and
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| 172 | <application>Python 3</application> is recommended by upstream for
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| 173 | development, you probably do not need to install the documentation.
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| 174 | However, if you still want to install documentation for both
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| 175 | <application>Python</application> versions, be sure to define the
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| 176 | <envar>PYTHONDOCS</envar>
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| 177 | variable for the version you want to use, each time you need to consult
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| 178 | the documentation. If you have downloaded the preformatted documentation
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| 179 | from <ulink url="http://docs.python.org/download.html"/>, install it
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| 180 | as the <systemitem class="username">root</systemitem> user:
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| 181 | </para>
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| 182 |
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| 183 | <screen role="root"><userinput>install -v -dm755 /usr/share/doc/python-&python2-version; &&
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| 184 |
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| 185 | tar --strip-components=1 \
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| 186 | --no-same-owner \
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| 187 | --directory /usr/share/doc/python-&python2-version; \
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| 188 | -xvf ../python-&python2-version;-docs-html.tar.bz2 &&
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| 189 |
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| 190 | find /usr/share/doc/python-&python2-version; -type d -exec chmod 0755 {} \; &&
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| 191 | find /usr/share/doc/python-&python2-version; -type f -exec chmod 0644 {} \;</userinput></screen>
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| 192 | </sect2>
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| 193 |
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| 194 | <sect2 role="commands">
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| 195 | <title>Command Explanations</title>
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| 196 |
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| 197 | <para>
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| 198 | <parameter>--with-system-expat</parameter>: This switch enables linking
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| 199 | against system version of <application>Expat</application>.
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| 200 | </para>
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| 201 |
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| 202 | <para>
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| 203 | <parameter>--with-system-ffi</parameter>: This switch enables linking
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| 204 | against system version of <application>libffi</application>.
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| 205 | </para>
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| 206 |
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| 207 | <para>
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| 208 | <parameter>--with-ensurepip=yes</parameter> : This switch enables building
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| 209 | <command>pip</command> and <command>setuptools</command> packaging programs.
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| 210 | <command>setuptools</command> is needed for building some Python modules.
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| 211 | </para>
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| 212 |
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| 213 | <para>
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| 214 | <parameter>--enable-unicode=ucs4</parameter>: This switch enables
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| 215 | 32bit Unicode support in <application>Python</application>.
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| 216 | </para>
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| 217 |
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| 218 | <para>
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| 219 | <option>--with-dbmliborder=bdb:gdbm:ndbm</option>: Use this switch
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| 220 | if you want to build <application>Python</application> DBM Module
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| 221 | against <application>Berkeley DB</application> instead of
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| 222 | <application>GDBM</application>.
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| 223 | </para>
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| 224 |
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| 225 | <para>
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| 226 | <command>chmod ...</command>: Fix permissions for libraries to be
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| 227 | consistent with other libraries.
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| 228 | </para>
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| 229 |
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| 230 | </sect2>
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| 231 |
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| 232 | <sect2 role="configuration">
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| 233 | <title>Configuring Python 2</title>
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| 234 |
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| 235 | <para>
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| 236 | In order for <command>python</command> to find the installed
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| 237 | documentation, you must add the following environment variable to
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| 238 | individual user's or the system's profile:
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| 239 | </para>
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| 240 |
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| 241 | <screen role="root"><userinput>export PYTHONDOCS=/usr/share/doc/python-&python2-version;</userinput></screen>
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| 242 |
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| 243 | </sect2>
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| 244 |
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| 245 | <sect2 role="content">
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| 246 | <title>Contents</title>
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| 247 |
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| 248 | <segmentedlist>
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| 249 | <segtitle>Installed Programs</segtitle>
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| 250 | <segtitle>Installed Library</segtitle>
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| 251 | <segtitle>Installed Directories</segtitle>
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| 252 |
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| 253 | <seglistitem>
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| 254 | <seg>
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| 255 | 2to3, pip2, pydoc, python (symlink), python-config (symlink),
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| 256 | python2 (symlink), python2-config (symlink),
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| 257 | python&python2-majorver;, python&python2-majorver;-config,
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| 258 | smtpd.py, and idle
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| 259 | </seg>
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| 260 | <seg>
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| 261 | libpython&python2-majorver;.so
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| 262 | </seg>
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| 263 | <seg>
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| 264 | /usr/{include,lib}/python&python2-majorver; and
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| 265 | /usr/share/doc/python-&python2-version;
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| 266 | </seg>
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| 267 | </seglistitem>
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| 268 | </segmentedlist>
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| 269 |
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| 270 | <variablelist>
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| 271 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 272 | <?dbfo list-presentation="list"?>
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| 273 | <?dbhtml list-presentation="table"?>
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| 274 |
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| 275 | <varlistentry id="python2-2to3">
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| 276 | <term><command>2to3</command></term>
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| 277 | <listitem>
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| 278 | <para>
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| 279 | is a <application>Python</application> program that reads
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| 280 | <application>Python 2.x</application> source code and applies a
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| 281 | series of fixes to transform it into valid
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| 282 | <application>Python 3.x</application> code.
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| 283 | </para>
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| 284 | <indexterm zone="python2 python2-2to3">
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| 285 | <primary sortas="b-2to3">2to3</primary>
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| 286 | </indexterm>
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| 287 | </listitem>
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| 288 | </varlistentry>
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| 289 |
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| 290 | <varlistentry id="pip2">
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| 291 | <term><command>pip2</command></term>
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| 292 | <listitem>
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| 293 | <para>
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| 294 | is the package manager for <application>Python 2.x</application>.
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| 295 | It is used to automate management of
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| 296 | <application>Python 2.x</application> modules.
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| 297 | </para>
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| 298 | <indexterm zone="python2 pip2">
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| 299 | <primary sortas="b-pip2">pip2</primary>
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| 300 | </indexterm>
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| 301 | </listitem>
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| 302 | </varlistentry>
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| 303 |
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| 304 | <varlistentry id="idle">
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| 305 | <term><command>idle</command></term>
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| 306 | <listitem>
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| 307 | <para>
|
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| 308 | is a wrapper script that opens a <application>Python</application>
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| 309 | aware GUI editor. For this script to run, you must have installed
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| 310 | <application>Tk</application> before Python so that the Tkinter
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| 311 | Python module is built.
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| 312 | </para>
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| 313 | <indexterm zone="python2 idle">
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| 314 | <primary sortas="b-idle">idle</primary>
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| 315 | </indexterm>
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| 316 | </listitem>
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| 317 | </varlistentry>
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| 318 |
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| 319 | <varlistentry id="pydoc2">
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| 320 | <term><command>pydoc</command></term>
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| 321 | <listitem>
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| 322 | <para>
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| 323 | is the <application>Python</application> documentation tool.
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| 324 | </para>
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| 325 | <indexterm zone="python2 pydoc2">
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| 326 | <primary sortas="b-pydoc2">pydoc</primary>
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| 327 | </indexterm>
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| 328 | </listitem>
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| 329 | </varlistentry>
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| 330 |
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| 331 | <varlistentry id="python">
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| 332 | <term><command>python</command></term>
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| 333 | <listitem>
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| 334 | <para>
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| 335 | is an interpreted, interactive, object-oriented programming
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| 336 | language.
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| 337 | </para>
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| 338 | <indexterm zone="python2 python">
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| 339 | <primary sortas="b-python2">python</primary>
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| 340 | </indexterm>
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| 341 | </listitem>
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| 342 | </varlistentry>
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| 343 |
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| 344 | <varlistentry id="python2-ver">
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| 345 | <term><command>python&python2-majorver;</command></term>
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| 346 | <listitem>
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| 347 | <para>
|
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| 348 | is a version-specific name for the <command>python</command>
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| 349 | program.
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| 350 | </para>
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| 351 | <indexterm zone="python2 python2-ver">
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| 352 | <primary sortas="b-python&python2-majorver;">python&python2-majorver;</primary>
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| 353 | </indexterm>
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| 354 | </listitem>
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| 355 | </varlistentry>
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|---|
| 356 |
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| 357 | <varlistentry id="smtpd.py">
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| 358 | <term><command>smtpd.py</command></term>
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| 359 | <listitem>
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| 360 | <para>
|
|---|
| 361 | is an SMTP proxy implemented in <application>Python</application>.
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|---|
| 362 | </para>
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|---|
| 363 | <indexterm zone="python2 smtpd.py">
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| 364 | <primary sortas="b-smtpd.py">smtpd.py</primary>
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| 365 | </indexterm>
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| 366 | </listitem>
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| 367 | </varlistentry>
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| 368 |
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| 369 | </variablelist>
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| 370 |
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| 371 | </sect2>
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| 372 |
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| 373 | </sect1>
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