changing-keras-version.html

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            <h1>Changing Keras Version</h1>
Thu 22 March 2018

by <a class="url fn" href="/author/aditya-arora.html">Aditya Arora</a>
 

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        <div><p>Sometimes, we get errors which when looked up as <strong>Github issues</strong> dont give us a solid answer. It is told to change <strong>Theano</strong> versions to using <strong>CPU</strong>. A simple trick is to downgrade your keras version from <code>2.1.x</code> to <code>2.0.y</code> where <code>y&lt;=5</code>.
For this we have to check which version we currently have. Also note that the previous versions are not available in <code>conda</code>. This means we have to use <code>pip</code>for installations. Also, we dont want to change any other dependencies as they are working well.
- Check keras version</p>
<div class="highlight"><pre><span></span>$ conda list keras
</pre></div>


<p>Output</p>
<div class="highlight"><pre><span></span># packages in environment at C:\Anaconda2:
#
keras                     2.1.5                    py27_0    conda-forge
</pre></div>


<p>We have <code>Keras 2.1.5</code> and wwant to switch to <code>Keras 2.0.5</code> without altering any dependencies. We remove keras with <code>--force</code>.</p>
<div class="highlight"><pre><span></span>$ conda remove keras --force
</pre></div>


<p>We now install keras with no dependencies using <code>--no-deps</code> flag.</p>
<div class="highlight"><pre><span></span>$ pip install <span class="nv">keras</span><span class="o">==</span><span class="m">2</span>.0.5 --no-deps
</pre></div>


<p>Output</p>
<div class="highlight"><pre><span></span>Collecting keras==2.0.5
  Downloading Keras-2.0.5.tar.gz (216kB)
    100% |################################| 225kB 639kB/s
Building wheels for collected packages: keras
  Running setup.py bdist_wheel for keras ... done
  Stored in directory: C:\Users\dell\AppData\Local\pip\Cache\wheels\f9\8d\c5\efc2eeea676156ca5bed9
cfbdb63098c40336d7d2b269be5ea
Successfully built keras
Installing collected packages: keras
Successfully installed keras-2.0.5
</pre></div></div>
	
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