Can't change "heading 1" font name using docx
<p>I am using the following script :</p>

<pre><code>header = self.document.add_paragraph(style='Heading 1')
header.style.font.name = 'Arial'
header.style.font.size = Pt(16)
header.add_run('Header One')
</code></pre>

<p>The result is that "Header One" get 'Calibri'. </p>