research on PDF files merge in horizontally

part2_Use-Python-in-Office/ch09_work-with-PDF/9-add-1_merge-horizontal/merge_mutil/get_info.py

@@ -0,0 +1,20 @@
+from PyPDF2 import PdfReader
+
+reader = PdfReader("./a.pdf")
+
+meta = reader.metadata
+
+print(meta.author)
+
+print(meta.creator)
+
+print(meta.producer)
+
+print(meta.title)
+
+print(meta.subject)
+
+for i in range(len(reader.pages)):
+    page = reader.pages[i].rotate(90)
+    page = reader.pages[i]
+    print(page.mediabox.lower_left, page.mediabox.lower_right, page.mediabox.upper_left, page.mediabox.upper_right)

part2_Use-Python-in-Office/ch09_work-with-PDF/9-add-1_merge-horizontal/merge_mutil/h-merge_pypdf3_multipage.py → part2_Use-Python-in-Office/ch09_work-with-PDF/9-add-1_merge-horizontal/merge_mutil/h-merge_pypdf3_multipage_v2.py

@@ -1,30 +1,30 @@
+# Purpose:      Merge two PDFs (with same total pages) in side by side horizontally
+# Author:       Xiaoqi Zhao
+# Version 2:    2023/12/24, remove dependency from PageObject
+# Version 1:    2023/12/23, initialization
+
 from PyPDF3 import PdfFileReader, PdfFileWriter
-from PyPDF3.pdf import PageObject
 
-pdf_filenames = ["./a.pdf", "./b.pdf"]
+pdf_filenames = ["./a1.pdf", "./b1.pdf"]
 
 reader1 = PdfFileReader(open(pdf_filenames[0], "rb"), strict=False)
 reader2 = PdfFileReader(open(pdf_filenames[1], "rb"), strict=False)
 
 writer = PdfFileWriter()
 
-page1 = reader1.getPage(0)
-page2 = reader2.getPage(0)
-
 for i in range(len(reader1.pages)):
 
     page1 = reader1.getPage(i)
+
     page2 = reader2.getPage(i)
 
     total_width = page1.mediaBox.upperRight[0] + page2.mediaBox.upperRight[0]
     total_height = max([page1.mediaBox.upperRight[1], page2.mediaBox.upperRight[1]])
-    # print(total_width, total_height)
+    print(total_width, total_height)
 
     new_page = writer.insertBlankPage(total_width, total_height, i)
 
     new_page.mergePage(page1)
     new_page.mergeTranslatedPage(page2, page1.mediaBox.upperRight[0], 0)
 
-    # writer.addPage(new_page)
-
-writer.write(open("./h-merge_pypdf3-multipage.pdf", "wb"))
+writer.write(open("./h-a-b.pdf", "wb"))

part2_Use-Python-in-Office/ch09_work-with-PDF/9-add-1_merge-horizontal/merge_mutil/h-merge_pypdf3_multipage_v3.py

@@ -0,0 +1,43 @@
+# Purpose:      Merge two PDFs (with same total pages) in side by side horizontally
+# Author:       Xiaoqi Zhao
+# Version 3:    2023/12/24, support merging of two PDFs with different total pages
+# Version 2:    2023/12/24, remove dependency from PageObject
+# Version 1:    2023/12/23, initialization
+
+from PyPDF3 import PdfFileReader, PdfFileWriter
+
+pdf_filenames = ["./grabit.pdf", "./High_Level_TQRDC.pdf"]
+
+reader1 = PdfFileReader(open(pdf_filenames[0], "rb"), strict=False)
+reader2 = PdfFileReader(open(pdf_filenames[1], "rb"), strict=False)
+
+writer = PdfFileWriter()
+
+for i in range(max(len(reader1.pages), len(reader2.pages))):
+
+    if i < len(reader1.pages):
+        page1 = reader1.getPage(i)
+
+    if i < len(reader2.pages):
+        page2 = reader2.getPage(i)
+
+    total_width = page1.mediaBox.upperRight[0] + page2.mediaBox.upperRight[0]
+    total_height = max([page1.mediaBox.upperRight[1], page2.mediaBox.upperRight[1]])
+    print(total_width, total_height)
+
+    new_page = writer.insertBlankPage(total_width, total_height, i)
+
+    if len(reader1.pages) > len(reader2.pages):
+        if i > len(reader2.pages):
+            new_page.mergePage(page1)
+        else:
+            new_page.mergePage(page1)
+            new_page.mergeTranslatedPage(page2, page1.mediaBox.upperRight[0], 0)
+    else:
+        if i > len(reader1.pages):
+            new_page.mergePage(page1)
+        else:
+            new_page.mergePage(page1)
+            new_page.mergeTranslatedPage(page2, page1.mediaBox.upperRight[0], 0)
+
+writer.write(open("./test.pdf", "wb"))