added an article

added an article on the isin method for dataframes

blog/Statistics_10days-day0.html

@@ -185,7 +185,7 @@ For a continuous probability distribution, the median is the value such that a n
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blog/Statistics_10days-day1.html

@@ -219,7 +219,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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blog/Statistics_10days-day2.html

@@ -429,7 +429,7 @@
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-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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blog/Statistics_10days-day3.html

@@ -256,7 +256,7 @@ we call B the event "a blue ball is drawn" and R the event "a red ball is drawn"
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blog/Statistics_10days-day4.html

@@ -311,7 +311,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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blog/Statistics_10days-day5.html

@@ -331,7 +331,7 @@ Between 20 and 22 hours?</p>
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blog/Statistics_10days-day6.html

@@ -270,7 +270,7 @@ The total number of tickets bought follows a normal distribution of mean <span c
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blog/Statistics_10days-day7.html

@@ -272,7 +272,7 @@
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blog/Statistics_10days-day8.html

@@ -277,7 +277,7 @@ $$</div>
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blog/Statistics_10days-day9.html

@@ -275,7 +275,7 @@
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cryptocurrencies/Installing_bitcoind_on_raspberry_pi.html

@@ -286,7 +286,7 @@ maxuploadtarget=5000
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cryptocurrencies/blockchain_bad.html

@@ -161,7 +161,7 @@
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cryptocurrencies/mayer_multiple.html

@@ -365,7 +365,7 @@
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dl/csv_logger_keras.html

@@ -279,7 +279,7 @@ Let's first import some libraries</p>
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dl/keras_info.html

@@ -161,7 +161,7 @@
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dl/keras_input.html

@@ -149,7 +149,7 @@
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dl/keras_install.html

@@ -152,7 +152,7 @@
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dl/keras_load.html

@@ -154,7 +154,7 @@
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dl/model_checkpoint_keras.html

@@ -235,7 +235,7 @@ Let's first import some libraries</p>
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dl/tensorboard_keras.html

@@ -280,7 +280,7 @@
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index.html

@@ -409,6 +409,7 @@
       </div>
       <div class="panel-body">
         <ul>
+            <li><a href="./python/select_lines_values_list.html">Filter or select lines of a DataFrame containing values in a list</a></li>
             <li><a href="./python/reverse_column_order.html">Reverse column order in pandas</a></li>
             <li><a href="./python/reverse_row_order.html">Reverse row order in pandas</a></li>
             <li><a href="./python/rename_columns_pandas.html">Rename columns in pandas</a></li>
@@ -711,7 +712,7 @@
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jupyter/clear_cell.html

@@ -149,7 +149,7 @@
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jupyter/remote_run_notebook.html

@@ -211,7 +211,7 @@
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linux/Reloading_.bashrc.html

@@ -144,7 +144,7 @@ However, you can use the following command to do it </p>
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linux/Reloading_fstab.html

@@ -143,7 +143,7 @@
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linux/bashrc.html

@@ -203,7 +203,7 @@
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linux/directory_size.html

@@ -148,7 +148,7 @@
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linux/free_disk_space_linux.html

@@ -167,7 +167,7 @@ none               0     0     0    - /config
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linux/get_ip_linux.html

@@ -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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linux/linux_process_information.html

@@ -172,7 +172,7 @@ USER;PID;%CPU;%MEM;VSZ;RSS;TTY;STAT;START;TIME;COMMAND</p>
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linux/mount_nfs_share_fstab.html

@@ -158,7 +158,7 @@
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linux/ramdisk.html

@@ -169,7 +169,7 @@ dd <span class="k">if</span><span class="o">=</span>/dev/zero <span class="nv">o
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linux/sed.html

@@ -494,7 +494,7 @@
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linux/share_nfs_share.html

@@ -151,7 +151,7 @@
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linux/simple_bash_function.html

@@ -208,7 +208,7 @@ The secret number is 126
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linux/version_kernel.html

@@ -160,7 +160,7 @@
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machine-learning/LeastSquareRegressionLine.html

@@ -234,7 +234,7 @@ Where :</p>
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machine-learning/Multiple_Linear_Regression.html

@@ -248,7 +248,7 @@ b_2\\
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mathematics/Bayes.html

@@ -196,7 +196,7 @@
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mathematics/Binomial.html

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mathematics/Geometric.html

@@ -233,7 +233,7 @@ So :
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mathematics/KLD.html

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mathematics/Number_edges_Complete_graph.html

@@ -195,7 +195,7 @@
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mathematics/Premutations_and_combinations.html

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mathematics/cond_prob.html

@@ -197,7 +197,7 @@ and B are considered to be independent if event A has no effect on the probabili
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mathematics/normal.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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mathematics/pearson.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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mathematics/poisson.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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mathematics/spearman.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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pages/about.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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projects/get_traffic_data.html

@@ -524,7 +524,7 @@ And we do the same for he 10 points that minimize time for user 2, color them is
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/Creating_a_sqlite_database.html

@@ -192,7 +192,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/Efficient_extraction_of_eigenvalues_from_a_list_of_tensors.html

@@ -241,7 +241,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/Iterating_over_a_dataframe.html

@@ -235,7 +235,7 @@
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python/Moving_average_pandas.html

@@ -378,7 +378,7 @@
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python/Opening_SQLite_database.html

@@ -168,7 +168,7 @@
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python/Opening_file.html

@@ -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

@@ -176,7 +176,7 @@ conda install numpy --channel intel --override-channels
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python/Parula.html

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python/Reading_data_from_a_sql_database_with_pandas.html

@@ -237,7 +237,7 @@
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python/Saving_a_matplotlib_figure_with_a_high_resolution.html

@@ -186,7 +186,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/Setting_up_the_notebook_for_plotting_with_matplotlib.html

@@ -171,7 +171,7 @@
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python/Writing_data_to_a_sql_database_with_pandas.html

@@ -339,7 +339,7 @@ However, exporting to a sql database can prove very useful. Indeed, having a wel
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python/case_config.html

@@ -146,7 +146,7 @@
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python/compare_dict.html

@@ -165,7 +165,7 @@
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python/config_list.html

@@ -160,7 +160,7 @@ myvariable: 42
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python/config_parse.html

@@ -169,7 +169,7 @@ myvariable: 42
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python/counting.html

@@ -181,7 +181,7 @@
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python/dask_distributed_parallelism.html

@@ -338,7 +338,7 @@ http://127.0.0.1:8787/status</p>
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python/dask_infiniband.html

@@ -148,7 +148,7 @@
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python/design_own_libs.html

@@ -232,7 +232,7 @@ The list of dependencies required to test, build and generate the doc are listed
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python/dict_comprehension.html

@@ -164,7 +164,7 @@
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python/download_page.html

@@ -218,7 +218,7 @@
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python/ensure_dir.html

@@ -177,7 +177,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/iterate_dict.html

@@ -158,7 +158,7 @@
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python/list_files_directory.html

@@ -213,7 +213,7 @@
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python/list_windows.html

@@ -217,7 +217,7 @@
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python/logplot.html

@@ -248,7 +248,7 @@
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python/maximize_window.html

@@ -188,7 +188,7 @@
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python/pandas_extended_types.html

@@ -181,7 +181,7 @@
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python/quandl.html

@@ -237,7 +237,7 @@
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python/randint.html

@@ -156,7 +156,7 @@
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python/rename_columns_pandas.html

@@ -647,7 +647,7 @@ you also need to specify the axis.</p>
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python/reverse.html

@@ -173,7 +173,7 @@
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python/reverse_column_order.html

@@ -288,7 +288,7 @@
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python/reverse_row_order.html

@@ -359,7 +359,7 @@
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python/select_lines_values_list.html

@@ -0,0 +1,365 @@
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+<section id="content" class="body">
+    <header>
+    <h1>
+      Filter or select lines of a DataFrame containing values in a list
+    </h1>
+<ol class="breadcrumb">
+    <li>
+        <time class="published" datetime="2019-09-27T09:33:00+02:00">
+            27 septembre 2019
+        </time>
+    </li>
+    <li>Python</li>
+    <li>Data Wrangling</li>
+</ol>
+</header>
+<div class='article_content'>
+<p>In this article we will learn to filter the lines of a dataframe based on the values contained in a column of that dataframe. This is simular to the "Filter" functionnality of Excel. Let's first create our dataframe :</p>
+<div class="highlight"><pre><span></span><span class="c1"># Import modules</span>
+<span class="kn">import</span> <span class="nn">pandas</span> <span class="kn">as</span> <span class="nn">pd</span>
+</pre></div>
+
+
+<div class="highlight"><pre><span></span><span class="c1"># Example dataframe</span>
+
+<span class="n">raw_data</span>  <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;fruit&#39;</span><span class="p">:</span> <span class="p">[</span><span class="s1">&#39;Banana&#39;</span><span class="p">,</span> <span class="s1">&#39;Orange&#39;</span><span class="p">,</span> <span class="s1">&#39;Apple&#39;</span><span class="p">,</span> <span class="s1">&#39;lemon&#39;</span><span class="p">,</span> <span class="s2">&quot;lime&quot;</span><span class="p">,</span> <span class="s2">&quot;plum&quot;</span><span class="p">],</span> 
+        <span class="s1">&#39;color&#39;</span><span class="p">:</span> <span class="p">[</span><span class="s1">&#39;yellow&#39;</span><span class="p">,</span> <span class="s1">&#39;orange&#39;</span><span class="p">,</span> <span class="s1">&#39;red&#39;</span><span class="p">,</span> <span class="s1">&#39;yellow&#39;</span><span class="p">,</span> <span class="s2">&quot;green&quot;</span><span class="p">,</span> <span class="s2">&quot;purple&quot;</span><span class="p">],</span> 
+        <span class="s1">&#39;kcal&#39;</span><span class="p">:</span> <span class="p">[</span><span class="mi">89</span><span class="p">,</span> <span class="mi">47</span><span class="p">,</span> <span class="mi">52</span><span class="p">,</span> <span class="mi">15</span><span class="p">,</span> <span class="mi">30</span><span class="p">,</span> <span class="mi">28</span><span class="p">]</span>
+    <span class="p">}</span>
+
+<span class="n">df</span> <span class="o">=</span> <span class="n">pd</span><span class="o">.</span><span class="n">DataFrame</span><span class="p">(</span><span class="n">raw_data</span><span class="p">,</span> <span class="n">columns</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;fruit&#39;</span><span class="p">,</span> <span class="s1">&#39;color&#39;</span><span class="p">,</span> <span class="s1">&#39;kcal&#39;</span><span class="p">])</span>
+<span class="n">df</span>
+</pre></div>
+
+
+<div>
+<style scoped>
+    .dataframe tbody tr th:only-of-type {
+        vertical-align: middle;
+    }
+
+    .dataframe tbody tr th {
+        vertical-align: top;
+    }
+
+    .dataframe thead th {
+        text-align: right;
+    }
+</style>
+<table border="1" class="dataframe">
+  <thead>
+    <tr style="text-align: right;">
+      <th></th>
+      <th>fruit</th>
+      <th>color</th>
+      <th>kcal</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>0</th>
+      <td>Banana</td>
+      <td>yellow</td>
+      <td>89</td>
+    </tr>
+    <tr>
+      <th>1</th>
+      <td>Orange</td>
+      <td>orange</td>
+      <td>47</td>
+    </tr>
+    <tr>
+      <th>2</th>
+      <td>Apple</td>
+      <td>red</td>
+      <td>52</td>
+    </tr>
+    <tr>
+      <th>3</th>
+      <td>lemon</td>
+      <td>yellow</td>
+      <td>15</td>
+    </tr>
+    <tr>
+      <th>4</th>
+      <td>lime</td>
+      <td>green</td>
+      <td>30</td>
+    </tr>
+    <tr>
+      <th>5</th>
+      <td>plum</td>
+      <td>purple</td>
+      <td>28</td>
+    </tr>
+  </tbody>
+</table>
+</div>
+
+<p>If we want to extract all the lines where the value of the color column is yellow, we would proceed like so :</p>
+<div class="highlight"><pre><span></span><span class="n">df</span><span class="p">[</span><span class="n">df</span><span class="p">[</span><span class="s2">&quot;color&quot;</span><span class="p">]</span> <span class="o">==</span> <span class="s2">&quot;yellow&quot;</span><span class="p">]</span>
+</pre></div>
+
+
+<div>
+<style scoped>
+    .dataframe tbody tr th:only-of-type {
+        vertical-align: middle;
+    }
+
+    .dataframe tbody tr th {
+        vertical-align: top;
+    }
+
+    .dataframe thead th {
+        text-align: right;
+    }
+</style>
+<table border="1" class="dataframe">
+  <thead>
+    <tr style="text-align: right;">
+      <th></th>
+      <th>fruit</th>
+      <th>color</th>
+      <th>kcal</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>0</th>
+      <td>Banana</td>
+      <td>yellow</td>
+      <td>89</td>
+    </tr>
+    <tr>
+      <th>3</th>
+      <td>lemon</td>
+      <td>yellow</td>
+      <td>15</td>
+    </tr>
+  </tbody>
+</table>
+</div>
+
+<p>Now, if we want to filter the DataFrame by a list of values we would rather use the <code>isin</code> method like this :</p>
+<div class="highlight"><pre><span></span><span class="n">df</span><span class="p">[</span><span class="n">df</span><span class="p">[</span><span class="s2">&quot;color&quot;</span><span class="p">]</span><span class="o">.</span><span class="n">isin</span><span class="p">([</span><span class="s2">&quot;yellow&quot;</span><span class="p">,</span> <span class="s2">&quot;red&quot;</span><span class="p">])]</span>
+</pre></div>
+
+
+<div>
+<style scoped>
+    .dataframe tbody tr th:only-of-type {
+        vertical-align: middle;
+    }
+
+    .dataframe tbody tr th {
+        vertical-align: top;
+    }
+
+    .dataframe thead th {
+        text-align: right;
+    }
+</style>
+<table border="1" class="dataframe">
+  <thead>
+    <tr style="text-align: right;">
+      <th></th>
+      <th>fruit</th>
+      <th>color</th>
+      <th>kcal</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <th>0</th>
+      <td>Banana</td>
+      <td>yellow</td>
+      <td>89</td>
+    </tr>
+    <tr>
+      <th>2</th>
+      <td>Apple</td>
+      <td>red</td>
+      <td>52</td>
+    </tr>
+    <tr>
+      <th>3</th>
+      <td>lemon</td>
+      <td>yellow</td>
+      <td>15</td>
+    </tr>
+  </tbody>
+</table>
+</div>
+</div>
+    <aside>
+    <div class="bug-reporting__panel">
+        <h3>Find an error or bug? Have a suggestion?</h3>
+        <p>Everything on this site is avaliable on GitHub. Head on over and <a href='https://github.com/redoules/redoules.github.io/issues/new'>submit an issue.</a> You can also message me directly by <a href='mailto:guillaume.redoules@gadz.org'>email</a>.</p>
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+
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/sorting.html

@@ -192,7 +192,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/stock_pandas.html

@@ -381,7 +381,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/unique.html

@@ -171,7 +171,7 @@
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-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/updating_all_python_package_with_anaconda.html

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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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python/write_config_file.html

@@ -176,7 +176,7 @@
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-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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search.html

@@ -112,7 +112,7 @@
     <footer class="footer">
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             <p class="text-muted">
-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 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>.

sitemap.xml

@@ -5,7 +5,7 @@ xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 
 <url>
 <loc>redoules.github.io/</loc>
-<lastmod>2019-08-30T08:04:13-00:00</lastmod>
+<lastmod>2019-10-20T20:28:08-00:00</lastmod>
 <changefreq>daily</changefreq>
 <priority>0.5</priority>
 </url>
@@ -17,6 +17,13 @@ xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 <priority>0.5</priority>
 </url>
 
+<url>
+<loc>redoules.github.io/python/select_lines_values_list.html</loc>
+<lastmod>2019-09-27T09:33:00+02:00</lastmod>
+<changefreq>monthly</changefreq>
+<priority>0.5</priority>
+</url>
+
 <url>
 <loc>redoules.github.io/python/config_list.html</loc>
 <lastmod>2019-08-30T07:56:00+02:00</lastmod>

sql/Sorting_results.html

@@ -344,7 +344,7 @@
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             <p class="text-muted">
-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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sql/WHERE_SQL_keywords.html

@@ -631,7 +631,7 @@
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             <p class="text-muted">
-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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sql/display_table.html

@@ -216,7 +216,7 @@ In our example, we want to display the data contained in the table named tutyfru
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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sql/display_table_filter.html

@@ -346,7 +346,7 @@ The database mydatabase.db is a SQLite database already created before the examp
     <footer class="footer">
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-                <center>This project contains 95 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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sql/grant_ip.html

@@ -156,7 +156,7 @@
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+                <center>This project contains 96 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
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sql/update_table.html

@@ -305,7 +305,7 @@ The database mydatabase.db is a SQLite database already created before the examp
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+                <center>This project contains 96 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>.