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Code Issues 3 Releases Wiki Activity

added an article and changed the index page

Browse Source 
article on ensure_dir
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Guillaume Redoulès 2018-09-15 08:08:52 +02:00
parent ac24e1418e
commit 7222f1da96
43 changed files with 385 additions and 50 deletions
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2
cryptocurrencies/Installing_bitcoind_on_raspberry_pi.html
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@ -286,7 +286,7 @@ maxuploadtarget=5000
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
<center>This project contains 38 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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cryptocurrencies/blockchain_bad.html
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@ -161,7 +161,7 @@
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<p class="text-muted">
<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
<center>This project contains 38 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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Copyright &copy; Guillaume Redoulès,
<time datetime="2018">2018</time>.

120
index.html
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@ -129,6 +129,23 @@
<hr/>
<div class="row" id="Blog">
<div class="col-sm-12">
<h2 class="homepage_category_title">Projects : learn by doing</h2>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
</div>
<hr/>
<div class="row" id="Machine Learning">
<div class="col-sm-12">
<h2 class="homepage_category_title">Machine Learning</h2>
@ -164,7 +181,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Feature Engineering</h3>
<h3 class="panel-title">Feature Engineering and Selection</h3>
</div>
<div class="panel-body">
<ul>
@ -177,7 +194,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Feature Selection</h3>
<h3 class="panel-title">Model evaluation and validation</h3>
</div>
<div class="panel-body">
<ul>
@ -190,7 +207,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Supervised Learning - Classification</h3>
<h3 class="panel-title">Model selection and hyperparameters optimization</h3>
</div>
<div class="panel-body">
<ul>
@ -203,7 +220,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Supervised Learning - Regression</h3>
<h3 class="panel-title">Linear regression</h3>
</div>
<div class="panel-body">
<ul>
@ -216,7 +233,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Unsupervised Learning</h3>
<h3 class="panel-title">Support Vector Machines</h3>
</div>
<div class="panel-body">
<ul>
@ -229,7 +246,64 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Model Selection</h3>
<h3 class="panel-title">Trees and Forests</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Nearest Neighbors</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Clustering methods</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
</div>
<div class="row" id="DL">
<div class="col-sm-12">
<h2 class="homepage_category_title">Deep Learning</h2>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">keras basics</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Feedforward networks</h3>
</div>
<div class="panel-body">
<ul>
@ -242,7 +316,7 @@
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Model Evaluation</h3>
<h3 class="panel-title">Deep convolutional Networks</h3>
</div>
<div class="panel-body">
<ul>
@ -251,7 +325,34 @@
</div>
</div>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Recurent networks</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
<div class="col-sm-12">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Other</h3>
</div>
<div class="panel-body">
<ul>
<li>Coming soon.</li>
</ul>
</div>
</div>
</div>
</div>
<div class="row" id="Python">
@ -265,6 +366,7 @@
</div>
<div class="panel-body">
<ul>
<li><a href="./python/ensure_dir.html">Safely creating a folder if it doesn't exist</a></li>
<li><a href="./python/list_files_directory.html">List all files in a directory</a></li>
<li><a href="./python/Opening_file.html">Opening a file with python</a></li>
<li><a href="./python/Opening_SQLite_database.html">Opening a SQLite database with python</a></li>
@ -567,7 +669,7 @@
<footer class="footer">
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
<center>This project contains 38 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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<time datetime="2018">2018</time>.

2
jupyter/clear_cell.html
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@ -149,7 +149,7 @@
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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jupyter/remote_run_notebook.html
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@ -211,7 +211,7 @@
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linux/Reloading_.bashrc.html
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@ -144,7 +144,7 @@ However, you can use the following command to do it </p>
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linux/Reloading_fstab.html
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@ -143,7 +143,7 @@
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linux/bashrc.html
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linux/directory_size.html
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@ -148,7 +148,7 @@
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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linux/free_disk_space_linux.html
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@ -167,7 +167,7 @@ none 0 0 0 - /config
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linux/get_ip_linux.html
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@ -256,7 +256,7 @@ wifi0 Link encap:UNSPEC HWaddr 5C-51-4F-41-7A-AD-00-00-00-00-00-00-00-00-00
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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linux/linux_process_information.html
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@ -172,7 +172,7 @@ USER;PID;%CPU;%MEM;VSZ;RSS;TTY;STAT;START;TIME;COMMAND</p>
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<center>This project contains 37 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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linux/mount_nfs_share_fstab.html
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@ -158,7 +158,7 @@
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linux/share_nfs_share.html
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linux/version_kernel.html
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machine-learning/Source code for the recommandation engine for articles.html
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@ -1033,7 +1033,7 @@ Top dislike features:
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pages/about.html
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python/Creating_a_sqlite_database.html
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python/Efficient_extraction_of_eigenvalues_from_a_list_of_tensors.html
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python/Iterating_over_a_dataframe.html
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@ -235,7 +235,7 @@ At line 5 there is a plum which is purple and contains 28 kcal
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python/Moving_average_pandas.html
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@ -378,7 +378,7 @@
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python/Opening_SQLite_database.html
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python/Opening_file.html
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@ -192,7 +192,7 @@ If you try to open a non existing file in read mode 'r', a FileNotFoundError wil
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python/Optimized_numpy_random_intel.html
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@ -176,7 +176,7 @@ conda install numpy --channel intel --override-channels
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python/Saving_a_matplotlib_figure_with_a_high_resolution.html
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python/Setting_up_the_notebook_for_plotting_with_matplotlib.html
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python/Writing_data_to_a_sql_database_with_pandas.html
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<h1>
Safely creating a folder if it doesn't exist
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<time class="published" datetime="2018-09-15T07:56:00+02:00">
15 septembre 2018
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<li>Python</li>
<li>Basics</li>
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<h2>Safely creating a folder if it doesn't exist</h2>
<p>When you are writing to files in python, if the file doesn't exist it will be created. However, if you are trying to write a file in a directory that doesn't exist, an exception will be returned </p>
<div class="highlight"><pre><span></span><span class="n">FileNotFoundError</span><span class="p">:</span> <span class="p">[</span><span class="n">Errno</span> <span class="mi">2</span><span class="p">]</span> <span class="n">No</span> <span class="n">such</span> <span class="nb">file</span> <span class="ow">or</span> <span class="n">directory</span><span class="p">:</span> <span class="s2">&quot;directory&quot;</span>
</pre></div>
<p>This article will teach you how to make sure the target directory exists. If it doesn't, the function will create that directory.</p>
<p>First, let's import os and make sure that the "test_directory" doesn't exist</p>
<div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">os</span>
<span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="s2">&quot;.</span><span class="se">\\</span><span class="s2">test_directory&quot;</span><span class="p">)</span>
</pre></div>
<div class="highlight"><pre><span></span>False
</pre></div>
<p>copy the ensure_dir function in your code. This function will handle the creation of the directory</p>
<div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">ensure_dir</span><span class="p">(</span><span class="n">file_path</span><span class="p">):</span>
<span class="n">directory</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">file_path</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">directory</span><span class="p">):</span>
<span class="n">os</span><span class="o">.</span><span class="n">makedirs</span><span class="p">(</span><span class="n">directory</span><span class="p">)</span>
</pre></div>
<p>Let's now use the function and create a folder named "test_directory"</p>
<div class="highlight"><pre><span></span><span class="n">ensure_dir</span><span class="p">(</span><span class="s2">&quot;.</span><span class="se">\\</span><span class="s2">test_directory&quot;</span><span class="p">)</span>
</pre></div>
<p>If we test for the existence of the directory, the exists function will now return True</p>
<div class="highlight"><pre><span></span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="s2">&quot;.</span><span class="se">\\</span><span class="s2">test_directory&quot;</span><span class="p">)</span>
</pre></div>
<div class="highlight"><pre><span></span>True
</pre></div>
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