merge pdf

merge.py

@@ -0,0 +1,59 @@
+#!/bin/env python3
+
+import os
+import datetime
+
+# pip3 install pypdf natsort
+from pypdf import PdfWriter, PdfReader, PageRange
+from natsort import natsorted
+
+
+mfname= "book3_elements_of_mathematics"
+def main():
+
+    pdfwrtr = PdfWriter()
+    t_pages = 0
+    net_start = False
+
+    pdfs = []
+
+    for r, dirs, files in os.walk("."):
+        del dirs[:]
+
+        for fitem in files:
+            fname, fext = os.path.splitext(fitem) 
+
+            if fext.lower() != ".pdf":
+                continue 
+            if not fitem.startswith("Book"):
+                continue
+
+            pdfs.append(fitem)
+
+
+    pwd = os.getcwd()
+
+    pdfs = natsorted(pdfs)
+
+    # print(" ----- ===== ", pdfs)
+    for fitem in pdfs:
+        # print(" ---- === --- ", fitem )
+        fname, fext = os.path.splitext(fitem) 
+
+        fname = fname.replace("Book3_", "")
+        fname = fname.rsplit("__", 2)[0]
+        fname = fname.replace("_", " ")
+
+        pdfrd = PdfReader(os.path.join(pwd, fitem), 'rb')
+        meta = pdfrd.metadata 
+        pdfwrtr.append( pdfrd, fname  )
+        pdfwrtr.add_metadata(meta)        
+
+    now = datetime.datetime.now()
+    now_str = now.strftime("%Y.%m.%d_%H_%M_%S")
+    pdfwrtr.write("{mfname}.{nw}.pdf".format(mfname=mfname, nw=now_str))
+    pdfwrtr.close()
+
+
+if __name__ == '__main__':
+    main()