part3/73 - Day 73 - Advanced - Data Visualisation with Matplotlib Programming Languages/004 Solution Analysis by Programming Language.html

<p>In order to look at the number of entries and the number of posts by programming language, we need to make use of the <code>.groupby()</code>&nbsp;method. The key is combining <code>.groupby()</code> with the TAG column, which holds as our categories (the names of the programming languages). </p><p>If we <code>.sum()</code>&nbsp;the number of posts then we can see how many posts each programming language had since the creation of Stack Overflow. </p><figure><img src="https://img-c.udemycdn.com/redactor/raw/2020-09-23_11-47-22-ce767dc3efa884429a71bb35e652a131.png"></figure><p>If we <code>.count()</code> the entries in each column, we can see how many months of entries exist per programming language. </p><figure><img src="https://img-c.udemycdn.com/redactor/raw/2020-09-23_11-47-32-a4950dc10e6c67b4556545955537ba86.png"></figure><p><br></p>