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 "57dffcee9cee8bb2ab5f82af1d8e9a69">
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11 | <!ENTITY python2-size "12 MB">
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12 | <!ENTITY python2-buildsize "268 MB (additional 17 MB for the tests)">
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13 | <!ENTITY python2-time "0.9 SBU (additional 4.8 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/2.7/archives/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 | &lfs7a_checked;
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45 |
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46 | <bridgehead renderas="sect3">Package Information</bridgehead>
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47 | <itemizedlist spacing="compact">
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48 | <listitem>
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49 | <para>
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50 | Download (HTTP): <ulink url="&python2-download-http;"/>
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51 | </para>
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52 | </listitem>
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53 | <listitem>
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54 | <para>
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55 | Download (FTP): <ulink url="&python2-download-ftp;"/>
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56 | </para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>
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60 | Download MD5 sum: &python2-md5sum;
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61 | </para>
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62 | </listitem>
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63 | <listitem>
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64 | <para>
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65 | Download size: &python2-size;
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66 | </para>
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67 | </listitem>
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68 | <listitem>
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69 | <para>
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70 | Estimated disk space required: &python2-buildsize;
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71 | </para>
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72 | </listitem>
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73 | <listitem>
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74 | <para>
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75 | Estimated build time: &python2-time;
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76 | </para>
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77 | </listitem>
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78 | </itemizedlist>
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79 |
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80 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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81 |
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82 | <itemizedlist spacing="compact">
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83 | <title>Optional HTML Documentation</title>
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84 | <listitem>
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85 | <para>
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86 | Download (HTTP): <ulink url="&python2htmldoc-download-http;"/>
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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">Python 2 Dependencies</bridgehead>
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92 |
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93 | <bridgehead renderas="sect4">Recommended</bridgehead>
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94 | <para role="recommended">
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95 | <xref linkend="libffi"/>
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96 | </para>
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97 |
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98 | <bridgehead renderas="sect4">Optional</bridgehead>
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99 | <para role="optional">
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100 | <xref linkend="bluez"/> and
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101 | <xref linkend="valgrind"/>
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102 | </para>
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103 |
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104 | <bridgehead renderas="sect4">Optional (For Additional Modules)</bridgehead>
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105 | <para role="optional">
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106 | <xref linkend="openssl"/>,
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107 | <xref linkend="sqlite"/> and
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108 | <xref linkend="tk"/>
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109 | </para>
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110 |
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111 | <note>
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112 | <para>
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113 | <!-- new for ff31. Any reasonable version of openssl will do,
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114 | even old maintained versions, so do not xref openssl here -->
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115 | If you are building <xref linkend="thunderbird"/> or
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116 | <xref linkend="firefox"/>
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117 | you must install <application>openssl</application> before you build
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118 | <application>Python 2</application>.
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119 | </para>
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120 | </note>
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121 |
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122 | <para condition="html" role="usernotes">
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123 | User Notes: <ulink url="&blfs-wiki;/Python"/>
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124 | </para>
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125 | </sect2>
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126 |
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127 | <sect2 role="installation">
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128 | <title>Installation of Python 2</title>
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129 |
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130 | <para>
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131 | Install <application>Python 2</application> by running the following
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132 | commands:
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133 | </para>
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134 |
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135 | <screen><userinput>./configure --prefix=/usr \
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136 | --enable-shared \
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137 | --with-system-expat \
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138 | --with-system-ffi \
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139 | --enable-unicode=ucs4 &&
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140 | make</userinput></screen>
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141 |
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142 | <para>
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143 | To test the results, issue: <command>make -k test</command>.
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144 | One test fails for unknown reasons.
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145 | </para>
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146 |
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147 | <para>
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148 | Now, as the <systemitem class="username">root</systemitem> user:
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149 | </para>
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150 |
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151 | <screen role="root"><userinput>make install &&
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152 | chmod -v 755 /usr/lib/libpython&python2-majorver;.so.1.0</userinput></screen>
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153 |
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154 | <para>
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155 | Since <application>Python 2</application> is in maintenance mode, and
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156 | <application>Python 3</application> is recommended by upstream for
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157 | development, you probably do not need to install the documentation.
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158 | However, if you still want to install documentation for both
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159 | <application>Python</application> versions, be sure to define the
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160 | <envar>PYTHONDOCS</envar>
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161 | variable for the version you want to use, each time you need to consult
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162 | the documentation. If you have downloaded the preformatted documentation
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163 | from <ulink url="http://docs.python.org/download.html"/>, install it
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164 | 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>install -v -dm755 /usr/share/doc/python-&python2-version; &&
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168 |
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169 | tar --strip-components=1 \
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170 | --no-same-owner \
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171 | --directory /usr/share/doc/python-&python2-version; \
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172 | -xvf ../python-&python2-version;-docs-html.tar.bz2 &&
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173 |
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174 | find /usr/share/doc/python-&python2-version; -type d -exec chmod 0755 {} \; &&
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175 | find /usr/share/doc/python-&python2-version; -type f -exec chmod 0644 {} \;</userinput></screen>
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176 | </sect2>
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177 |
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178 | <sect2 role="commands">
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179 | <title>Command Explanations</title>
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180 |
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181 | <para>
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182 | <parameter>--with-system-expat</parameter>: This switch enables linking
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183 | against system version of <application>Expat</application>.
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184 | </para>
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185 |
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186 | <para>
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187 | <parameter>--with-system-ffi</parameter>: This switch enables linking
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188 | against system version of <application>libffi</application>. Remove if
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189 | you have not installed <xref linkend="libffi"/>.
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190 | </para>
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191 |
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192 | <para>
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193 | <parameter>--enable-unicode=ucs4</parameter>: This switch enables
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194 | 32bit Unicode support in <application>Python</application>.
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195 | </para>
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196 |
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197 | <para>
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198 | <option>--with-dbmliborder=bdb:gdbm:ndbm</option>: Use this switch
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199 | if you want to build <application>Python</application> DBM Module
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200 | against <application>Berkeley DB</application> instead of
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201 | <application>GDBM</application>.
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202 | </para>
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203 |
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204 | <para>
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205 | <command>chmod ...</command>: Fix permissions for libraries to be
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206 | consistent with other libraries.
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207 | </para>
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208 |
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209 | </sect2>
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210 |
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211 | <sect2 role="configuration">
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212 | <title>Configuring Python 2</title>
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213 |
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214 | <para>
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215 | In order for <command>python</command> to find the installed
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216 | documentation, you must add the following environment variable to
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217 | individual user's or the system's profile:
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218 | </para>
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219 |
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220 | <screen role="root"><userinput>export PYTHONDOCS=/usr/share/doc/python-&python2-version;</userinput></screen>
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221 |
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222 | </sect2>
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223 |
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224 | <sect2 role="content">
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225 | <title>Contents</title>
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226 |
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227 | <segmentedlist>
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228 | <segtitle>Installed Programs</segtitle>
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229 | <segtitle>Installed Library</segtitle>
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230 | <segtitle>Installed Directories</segtitle>
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231 |
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232 | <seglistitem>
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233 | <seg>
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234 | 2to3, pydoc, python (symlink), python-config (symlink),
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235 | python2 (symlink), python2-config (symlink),
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236 | python&python2-majorver;, python&python2-majorver;-config,
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237 | smtpd.py, and idle
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238 | </seg>
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239 | <seg>
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240 | libpython&python2-majorver;.so
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241 | </seg>
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242 | <seg>
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243 | /usr/{include,lib}/python&python2-majorver; and
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244 | /usr/share/doc/python-&python2-version;
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245 | </seg>
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246 | </seglistitem>
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247 | </segmentedlist>
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248 |
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249 | <variablelist>
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250 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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251 | <?dbfo list-presentation="list"?>
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252 | <?dbhtml list-presentation="table"?>
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253 |
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254 | <varlistentry id="python2-2to3">
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255 | <term><command>2to3</command></term>
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256 | <listitem>
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257 | <para>
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258 | is a <application>Python</application> program that reads
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259 | <application>Python 2.x</application> source code and applies a
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260 | series of fixes to transform it into valid
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261 | <application>Python 3.x</application> code.
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262 | </para>
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263 | <indexterm zone="python2 python2-2to3">
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264 | <primary sortas="b-2to3">2to3</primary>
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265 | </indexterm>
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266 | </listitem>
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267 | </varlistentry>
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268 |
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269 | <varlistentry id="idle">
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270 | <term><command>idle</command></term>
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271 | <listitem>
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272 | <para>
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273 | is a wrapper script that opens a <application>Python</application>
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274 | aware GUI editor. For this script to run, you must have installed
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275 | <application>Tk</application> before Python so that the Tkinter
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276 | Python module is built.
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277 | </para>
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278 | <indexterm zone="python2 idle">
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279 | <primary sortas="b-idle">idle</primary>
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280 | </indexterm>
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281 | </listitem>
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282 | </varlistentry>
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283 |
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284 | <varlistentry id="pydoc2">
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285 | <term><command>pydoc</command></term>
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286 | <listitem>
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287 | <para>
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288 | is the <application>Python</application> documentation tool.
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289 | </para>
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290 | <indexterm zone="python2 pydoc2">
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291 | <primary sortas="b-pydoc2">pydoc</primary>
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292 | </indexterm>
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293 | </listitem>
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294 | </varlistentry>
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295 |
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296 | <varlistentry id="python">
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297 | <term><command>python</command></term>
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298 | <listitem>
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299 | <para>
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300 | is an interpreted, interactive, object-oriented programming
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301 | language.
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302 | </para>
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303 | <indexterm zone="python2 python">
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304 | <primary sortas="b-python2">python</primary>
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305 | </indexterm>
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306 | </listitem>
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307 | </varlistentry>
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308 |
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309 | <varlistentry id="python2-ver">
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310 | <term><command>python&python2-majorver;</command></term>
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311 | <listitem>
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312 | <para>
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313 | is a version-specific name for the <command>python</command>
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314 | program.
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315 | </para>
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316 | <indexterm zone="python2 python2-ver">
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317 | <primary sortas="b-python&python2-majorver;">python&python2-majorver;</primary>
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318 | </indexterm>
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319 | </listitem>
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320 | </varlistentry>
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321 |
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322 | <varlistentry id="smtpd.py">
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323 | <term><command>smtpd.py</command></term>
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324 | <listitem>
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325 | <para>
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326 | is an SMTP proxy implemented in <application>Python</application>.
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327 | </para>
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328 | <indexterm zone="python2 smtpd.py">
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329 | <primary sortas="b-smtpd.py">smtpd.py</primary>
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330 | </indexterm>
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331 | </listitem>
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332 | </varlistentry>
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333 |
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334 | </variablelist>
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335 |
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336 | </sect2>
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337 |
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338 | </sect1>
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