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Add Page Number to PDF file with Python(Python 给 PDF 添加 页码)
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#!/usr/bin/env python3 | |
# -*- coding: utf-8 -*- | |
helpDoc = ''' | |
Add Page Number to PDF file with Python | |
Python 给 PDF 添加 页码 | |
usage: | |
python addPageNumberToPDF.py [PDF path] | |
require: | |
pip install reportlab pypdf2 | |
Support both Python2/3, But more recommend Python3 | |
tips: | |
* output file will save at pdfWithNumbers/[PDF path]_page.pdf | |
* only support A4 size PDF | |
* tested on Python2/Python3@ubuntu | |
* more large size of PDF require more RAM | |
* if segmentation fault, plaese try use Python 3 | |
* if generate PDF document is damaged, plaese try use Python 3 | |
Author: | |
Lei Yang (ylxx@live.com) | |
GitHub: | |
https://gist.github.com/DIYer22/b9ede6b5b96109788a47973649645c1f | |
''' | |
print(helpDoc) | |
import reportlab | |
from reportlab.lib.units import mm | |
from reportlab.pdfgen import canvas | |
from PyPDF2 import PdfFileWriter, PdfFileReader | |
def createPagePdf(num, tmp): | |
c = canvas.Canvas(tmp) | |
for i in range(1,num+1): | |
c.drawString((210//2)*mm, (4)*mm, str(i)) | |
c.showPage() | |
c.save() | |
return | |
with open(tmp, 'rb') as f: | |
pdf = PdfFileReader(f) | |
layer = pdf.getPage(0) | |
return layer | |
if __name__ == "__main__": | |
pass | |
import sys,os | |
path = 'MLDS17f.pdf' | |
# path = '1.pdf' | |
if len(sys.argv) == 1: | |
if not os.path.isfile(path): | |
sys.exit(1) | |
else: | |
path = sys.argv[1] | |
base = os.path.basename(path) | |
tmp = "__tmp.pdf" | |
batch = 10 | |
batch = 0 | |
output = PdfFileWriter() | |
with open(path, 'rb') as f: | |
pdf = PdfFileReader(f,strict=False) | |
n = pdf.getNumPages() | |
if batch == 0: | |
batch = -n | |
createPagePdf(n,tmp) | |
if not os.path.isdir('pdfWithNumbers/'): | |
os.mkdir('pdfWithNumbers/') | |
with open(tmp, 'rb') as ftmp: | |
numberPdf = PdfFileReader(ftmp) | |
for p in range(n): | |
if not p%batch and p: | |
newpath = path.replace(base, 'pdfWithNumbers/'+ base[:-4] + '_page_%d'%(p//batch) + path[-4:]) | |
with open(newpath, 'wb') as f: | |
output.write(f) | |
output = PdfFileWriter() | |
# sys.stdout.write('\rpage: %d of %d'%(p, n)) | |
print('page: %d of %d'%(p, n)) | |
page = pdf.getPage(p) | |
numberLayer = numberPdf.getPage(p) | |
page.mergePage(numberLayer) | |
output.addPage(page) | |
if output.getNumPages(): | |
newpath = path.replace(base, 'pdfWithNumbers/' + base[:-4] + '_page_%d'%(p//batch + 1) + path[-4:]) | |
with open(newpath, 'wb') as f: | |
output.write(f) | |
os.remove(tmp) |
Hi brother, I would like to check, at what line does your code define the pdf input? also what is the tmp variable?
The codes gets the input file from the command line in line 58:
path = sys.argv[1]
the tmp
variable just defines the name for a temporary file that is written during the process, ad erased in the end.
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Fair enough, thanks!