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<div class="section" id="repeat">
<span id="index-0"></span><span id="id1"></span>
<div class="line-block">
<div class="line">It is sometimes useful to repeat the same task or family several times,</div>
<div class="line">looping on a specific value. You can do that by defining a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-repeat"><em class="xref std std-term">repeat</em></a> attribute.</div>
<div class="line">There are three kinds of data you can loop on:</div>
</div>
<blockquote>
<div><ul class="simple">
<li>strings</li>
<li>integers</li>
<li>dates</li>
</ul>
</div></blockquote>
<div class="line-block">
<div class="line">Integers and dates are specified as a range, with an optional increment (the default is one).</div>
<div class="line">Let us modify the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite-definition"><em class="xref std std-term">suite definition</em></a> file again</div>
</div>
<div class="highlight-python"><pre># Definition of the suite test.
suite test
 edit ECF_INCLUDE "$HOME/course"
 edit ECF_HOME    "$HOME/course"
 family f1
     edit SLEEP 20
     task t1
         meter progress 1 100 90
     task t2
         trigger t1 eq complete
         event a
         event b
     task t3
         trigger t2:a
     task t4
         trigger t2 eq complete
         complete t2:b
     task t5
         trigger t1:progress ge 30
     task t6
         trigger t1:progress ge 60
     task t7
         trigger t1:progress ge 90
 endfamily
 family f2
     edit SLEEP 20
     task t1
         time 00:30 23:30 00:30
     task t2
         day  sunday
     task t3
         date 01.*.*
         time 12:00
     task t4
         time +00:02
     task t5
         time 00:02
 endfamily
 family f3
     task t1
         label info ""
 endfamily
 family f4
     edit SLEEP 2
     repeat string NAME a b c d e f
     family f5
         repeat integer VALUE 1 10
         task t1
             repeat date DATE 19991230 20000105
             label info ""
     endfamily
 endfamily
endsuite</pre>
</div>
<p>In python this would be:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/env python2.5</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">ecflow</span>  
    
<span class="k">def</span> <span class="nf">list_to_str_vec</span><span class="p">(</span> <span class="n">theList</span> <span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;Converts a python list to a C++ StrVec&quot;&quot;&quot;</span>
    <span class="n">strvec</span> <span class="o">=</span> <span >ecflow<class="n">ecflow</span><span class="o">.</span><span class="n">StrVec</span><span class="p">()</span>
    <span class="k">for</span> <span class="n">theStr</span> <span class="ow">in</span> <span class="n">theList</span><span class="p">:</span>
        <span class="n">ecflow</span><span class="o">.</span><span >StrVec<class="n">StrVec</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">strvec</span><span class="p">,</span><span class="n">theStr</span><span class="p">)</span>
    <span class="k">return</span> <span class="n">strvec</span><span class="p">;</span> 

<span >def<class="k">def</span> <span class="nf">create_family_f4</span><span class="p">():</span>
    <span class="n">f4</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Family</span><span class="p">(</span><span class="s">&quot;f4&quot;</span><span class="p">)</span>
    <span >f4<class="n">f4</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">&quot;SLEEP&quot;</span><span class="p">,</span><span class="mi">2</span><span class="p">)</span>
    <span class="n">f4</span><span class="o">.</span><span class="n">add_repeat</span><span >class="p">(</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">RepeatString</span><span class="p">(</span><span class="s">&quot;NAME&quot;</span><span class="p">,</span> <span class="n">list_to_str_vec</span><span class="p">(</span> <span class="p">[</span><span class="s">&quot;a&quot;</span><span >class="p">,</span> <span class="s">&quot;b&quot;</span><span class="p">,</span> <span class="s">&quot;c&quot;</span><span class="p">,</span> <span class="s">&quot;d&quot;</span><span class="p">,</span> <span class="s">&quot;e&quot;</span><span class="p">,</span> <span class="s">&quot;f&quot;</span> <span class="p">]</span> <span >class="p">))</span> <span class="p">)</span>
   
    <span class="n">f5</span> <span class="o">=</span> <span class="n">f4</span><span class="o">.</span><span class="n">add_family</span><span class="p">(</span><span class="s">&quot;f5&quot;</span><span class="p">)</span>
    <span class="n">f5</span><span >class="o">.</span><span class="n">add_repeat</span><span class="p">(</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">RepeatInteger</span><span class="p">(</span><span class="s">&quot;VALUE&quot;</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span >10<class="mi">10</span><span class="p">)</span> <span class="p">)</span>
   
    <span class="n">t1</span> <span class="o">=</span> <span class="n">f5</span><span class="o">.</span><span class="n">add_task</span><span class="p">(</span><span class="s">&quot;t1&quot;</span><span class="p">)</span>
    <span >t1<class="n">t1</span><span class="o">.</span><span class="n">add_repeat</span><span class="p">(</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">RepeatDate</span><span class="p">(</span><span class="s">&quot;DATE&quot;</span><span class="p">,</span><span class="mi">20101230</span><span >class="p">,</span><span class="mi">20110105</span><span class="p">)</span> <span class="p">)</span>
    <span class="n">t1</span><span class="o">.</span><span class="n">add_label</span><span class="p">(</span><span class="s">&quot;info&quot;</span><span class="p">,</span><span class="s">&quot;&quot;</span><span >class="p">)</span>
    <span class="k">return</span> <span class="n">f4</span>
    
<span class="n">defs</span> <span class="o">=</span> <span class="n">ecflow</span><span class="o">.</span><span class="n">Defs</span><span >(</span><span >&quot;test.def&quot;</span><span >class="p">()</span>
<span class="n">suite</span> <span class="o">=</span> <span class="n">defs</span><span class="o">.</span><span class="n">add_suite</span><span class="p">(</span><span class="s">&quot;test&quot;</span><span  class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">&quot;ECF_INCLUDE&quot;</span><span class="p">,</span><span class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span  class="s">&quot;HOME&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s">&quot;/course&quot;</span><span class="p">)</span>
<span class="n">suite</span><span class="o">.</span><span class="n">add_variable</span><span class="p">(</span><span class="s">&quot;ECF_HOME   &quot;</span><span class="p">,</span><span  class="n">os</span><span class="o">.</span><span class="n">getenv</span><span class="p">(</span><span class="s">&quot;HOME&quot;</span><span class="p">)</span> <span class="o">+</span> <span class="s">&quot;/course&quot;</span><span class="p">)</span>

<span class="n">suite</span><span class="o">.</span><span  class="n">add_family</span><span class="p">(</span> <span class="n">create_family_f4</span><span class="p">()</span> <span class="p">)</span>
</pre></div>
</div>
<div class="line-block">
<div class="line">The name of the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-repeat"><em class="xref std std-term">repeat</em></a> defines an ECF <a  <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-variable"><em class="xref std std-term">variable</em></a>.</div>
<div class="line">We can write a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecf-script"><em class="xref std std-term">ecf script</em></a> <strong>/test/f4/f5/t1.ecf</strong> to use these variables</div>
</div>
<div class="highlight-python"><pre>%include &lt;head.h&gt;
ecfecflow_client --label=info "My name is %NAME%" "My value is %VALUE%" "My date is %DATE%"
sleep %SLEEP%
%include &lt;tail.h&gt;</pre>
</div>
<p>What to do:</p>
<ol  class="arabic simple">
<li>Type in the changes</li>
<li>Load and begin the <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-suite"><em class="xref std std-term">suite</em></a></li>
<li>How many times will <strong>/test/f4/f5/t1</strong> run?</li>
<li>In <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-ecflowview"><em >ecFlowview<class="xref std std-term">ecflowview</em></a>, try to modify the values of a <a class="reference internal" href="/wiki/display/ECFLOW/Glossary#term-repeat"><em class="xref std std-term">repeat</em></a></li>
</ol>
</div>