source: general/prog/python-modules/pyparsing.xml@ a8c1294

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect2 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../../general.ent">
  %general-entities;

  <!ENTITY pyparsing-download-http "https://files.pythonhosted.org/packages/source/p/pyparsing/pyparsing-&pyparsing-version;.tar.gz">
  <!ENTITY pyparsing-download-ftp  " ">
  <!ENTITY pyparsing-md5sum        "&pyparsing-md5sum;">
  <!ENTITY pyparsing-size          "1.9 MB">
  <!ENTITY pyparsing-buildsize     "8.7 MB (add 26 MB for tests)">
  <!ENTITY pyparsing-time          "less than 0.1 SBU (0.3 SBU for tests)">
]>

  <sect2 id="pyparsing" xreflabel="pyparsing-&pyparsing-version;">

    <title>pyparsing-&pyparsing-version;</title>

    <indexterm zone="pyparsing">
      <primary sortas="a-pyparsing">pyparsing</primary>
    </indexterm>

    <sect3 role="package">
      <title>Introduction to pyparsing Module</title>

      <para>
        The <application>pyparsing</application> module is an alternative
        approach to creating and executing simple grammars, vs. the
        traditional lex/yacc approach, or the use of regular expressions.
        It provides a library of classes that client code uses to construct
        the grammar directly in Python code.
      </para>

      &lfs113_checked;

      <bridgehead renderas="sect4">Package Information</bridgehead>
      <itemizedlist spacing="compact">
        <listitem>
          <para>
            Download (HTTP): <ulink url="&pyparsing-download-http;"/>
          </para>
        </listitem>
        <listitem>
          <para>
            Download (FTP): <ulink url="&pyparsing-download-ftp;"/>
          </para>
        </listitem>
        <listitem>
          <para>
            Download MD5 sum: &pyparsing-md5sum;
          </para>
        </listitem>
        <listitem>
          <para>
            Download size: &pyparsing-size;
          </para>
        </listitem>
        <listitem>
          <para>
            Estimated disk space required: &pyparsing-buildsize;
          </para>
        </listitem>
        <listitem>
          <para>
            Estimated build time: &pyparsing-time;
          </para>
        </listitem>
      </itemizedlist>

      <bridgehead renderas="sect4">pyparsing Dependencies</bridgehead>

      <bridgehead renderas="sect5">Required</bridgehead>
      <para role="required">
        <xref linkend="flit_core"/>
      </para>

      <bridgehead renderas="sect5">Optional</bridgehead>
      <para role="optional">
        <phrase revision="sysv"><xref linkend="Jinja2"/> and</phrase>
        <ulink url="https://pypi.org/project/railroad-diagrams/">
          railroad-diagrams
        </ulink> (also needed for tests)
      </para>

      <bridgehead renderas="sect5">Optional (for testing)</bridgehead>
      <para role="optional">
        <xref linkend="pytest"/>
      </para>

    </sect3>

    <sect3 role="installation">
      <title>Installation of pyparsing</title>

    <para> Build the module: </para>

<screen><userinput>pip3 wheel -w dist --no-build-isolation --no-deps $PWD</userinput></screen>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>pip3 install --no-index --find-links dist --no-cache-dir --no-user pyparsing</userinput></screen>

    <para>
      Assuming <xref linkend="pytest"/> <phrase revision="systemd">is</phrase>
      <phrase revision="sysv">and <xref linkend="Jinja2"/> are</phrase>
      installed, but the other optional dependency is not, the installation
      can be tested with the following commands:
    </para>

<screen remap="test"><userinput>python3 -m venv --system-site-packages testenv &amp;&amp;
source testenv/bin/activate                    &amp;&amp;
pip3 install railroad-diagrams                 &amp;&amp;
python3 /usr/bin/pytest<!-- no && because of a possible error -->
deactivate</userinput></screen>

    </sect3>

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../../xincludes/pip3-cmd-explain.xml"/>

    <sect3 role="content">
      <title>Contents</title>

      <segmentedlist>
        <segtitle>Installed Programs</segtitle>
        <segtitle>Installed Libraries</segtitle>
        <segtitle>Installed Directories</segtitle>

        <seglistitem>
          <seg>None</seg>
          <seg>None</seg>
          <seg>
            /usr/lib/python&python3-majorver;/site-packages/pyparsing and
            /usr/lib/python&python3-majorver;/site-packages/pyparsing-&pyparsing-version;.dist-info
          </seg>
        </seglistitem>
      </segmentedlist>

    </sect3>

  </sect2>