How to add Wagtail page programmatically via Python script

Given:

Two Wagtail CMS page classes:

class Section(Page):
    subtitle = models.Charfield(max_length=128)


class News(Page):
    content = models.Textfield()

Task:

Using a python script, add a News page item under the Section page titled "Latest news."

Solution:

1. Get parent page instance:

   parent_page = Page.objects.get(title="Latest news").specific
   

2. Create a News page instance:

   news_page = News(content="Something pleasant to hear.")
   

3. Add newly created instance as a child to the parent_page:

   parent_page.add_child(instance=news_page)
   

4. Save news_page:

   news_page.save()
   

Now you should see your page in the Wagtail explorer. Done!