To rotate a page in a PDF document.

doc = PDFDoc(filename)

# Rotate the first page 90 degrees clockwise.
page = doc.GetPage(1)
originalRotation = page.GetRotation()
rotation = None
if originalRotation == Page.e_0:
  rotation = Page.e_90
elif originalRotation == Page.e_90:
  rotation = Page.e_180
elif originalRotation == Page.e_180:
  rotation = Page.e_270
elif originalRotation == Page.e_270:
  rotation = Page.e_0
else
  rotation = Page.e_0
page.SetRotation(rotation)

A page can be rotated clockwise, by 90 degrees, when displayed or printed. The Page.GetRotation() method returns the Page.Rotate enum specifying the current rotation. Similarly, Page.SetRotation() sets the current rotation.