使用在线软件合并pdf论文文件安全吗？不妨使用简单的python代码

执行代码之前，使用下面命令安装pypdf2的python库

pip install pypdf2

python代码：

import PyPDF2
pdf1File = open('PDFFile1.pdf', 'rb')
pdf2File = open('PDFFile2.pdf', 'rb')
pdf1Reader = PyPDF2.PdfFileReader(pdf1File)
pdf2Reader = PyPDF2.PdfFileReader(pdf2File)
pdfWriter = PyPDF2.PdfFileWriter()
for pageNum in range(pdf1Reader.numPages):
    pageobj = pdf1Reader.getPage(pageNum)
    pdfWriter.addPage(pageobj)

for pageNum in range(pdf2Reader.numPages):
    pageobj = pdf2Reader.getPage(pageNum)
    pdfWriter.addPage(pageobj)
pdfOutputFile = open('PDF3.pdf', 'wb')
pdfWriter.write(pdfOutputFile)
pdfOutputFile.close()
pdf1File.close()
pdf2File.close()