如何在pdf文件中添加页码? [英] How to add page number to a pdf file?
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问题描述
我一直在努力将整个页码添加到pdf文档中,但我无法弄清楚.我想将python与pyPdf或reportlab一起使用.
I've been trying all morning to add page numbers to a pdf document, but I can't figure it out. I'd like to use python, with pyPdf or reportlab.
有人有什么想法吗?
推荐答案
这是我的Python代码,用于将页码添加到PDF文件. 我同时使用了pyPdf2和reportlab.
Here is my Python code to Add Page Number to PDF file. I have used both pyPdf2 and reportlab.
#!/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)
在我的 GitHub gist
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