合并多个pdf文件

来源某篇博客，忘了地址=_=!

# -*- coding:utf-8*-
# 利用PyPDF2模块合并同一文件夹下的所有PDF文件
# 只需修改存放PDF文件的文件夹变量：file_dir 和 输出文件名变量: outfile

import os
from PyPDF2 import PdfFileReader, PdfFileWriter
import time

# 使用os模块的walk函数，搜索出指定目录下的全部PDF文件
# 获取同一目录下的所有PDF文件的绝对路径
def getFileName(filedir):

    file_list = [os.path.join(root, filespath) \
                 for root, dirs, files in os.walk(filedir) \
                 for filespath in files \
                 if str(filespath).endswith('pdf')
                 ]
    return file_list if file_list else []

# 合并同一目录下的所有PDF文件
def MergePDF(filepath, outfile):

    output = PdfFileWriter()
    outputPages = 0
    pdf_fileName = getFileName(filepath)

    if pdf_fileName:
        for pdf_file in pdf_fileName:
            print("路径：%s"%pdf_file)

            # 读取源PDF文件
            input = PdfFileReader(open(pdf_file, "rb"))

            # 获得源PDF文件中页面总数
            pageCount = input.getNumPages()
            outputPages += pageCount
            print("页数：%d"%pageCount)

            # 分别将page添加到输出output中
            for iPage in range(pageCount):
                output.addPage(input.getPage(iPage))

        print("合并后的总页数:%d."%outputPages)
        # 写入到目标PDF文件
        outputStream = open(os.path.join(filepath, outfile), "wb")
        output.write(outputStream)
        outputStream.close()
        print("PDF文件合并完成！")

    else:
        print("没有可以合并的PDF文件！")

# 主函数
def main():
    time1 = time.time()
    file_dir = r'E:\test\ac3' # 存放PDF的原文件夹
    outfile = "Cheat_Sheets.pdf" # 输出的PDF文件的名称
    MergePDF(file_dir, outfile)
    time2 = time.time()
    print('总共耗时：%s s.' %(time2 - time1))

main()

可能会报错，注释site-packages/PyPDF2/generic.py下的这段代码：

标页码

#!/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
# 需要标页码的pdf文件
    path = 'E:\\test\\ac2\\3.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()
                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,  base[:-4] + '_page_%d'%(p//batch + 1)  + path[-4:])
                with open(newpath, 'wb') as f:
                    output.write(f)

        os.remove(tmp)