from ironpdf import *
 
html_a = """<p> [PDF_A] </p>
        <p> [PDF_A] 1st Page </p>
        <div style='page-break-after: always;'></div>
        <p> [PDF_A] 2nd Page</p>"""

html_b = """<p> [PDF_B] </p>
        <p> [PDF_B] 1st Page </p>
        <div style='page-break-after: always;'></div>
        <p> [PDF_B] 2nd Page</p>"""

renderer = ChromePdfRenderer()

# Create our main document
pdfdoc_a = renderer.RenderHtmlAsPdf(html_a)

# Create and select a page to copy
pdfdoc_b = renderer.RenderHtmlAsPdf(html_b)
page_to_insert = pdfdoc_b.CopyPage(1)

# 3 ways to insert:
pdfdoc_a.AppendPdf(page_to_insert)  # at the end
# or
pdfdoc_a.PrependPdf(page_to_insert)  # at the start
# or
pdfdoc_a.InsertPdf(page_to_insert, 1)  # in the middle

pdfdoc_a.SaveAs("CopiedPages.pdf")