将TXT文件转换为加密PDF文件

Question

我试图将文本文件（.txt）转换为加密的PDF文件，但出现错误：

TypeError: a bytes-like object is required, not 'str'

文本文件（.txt）内有中文文本，我使用的代码如下：

import PyPDF2
from fpdf import FPDF


with open('Chinese.txt') as f:
   QQ = f.read()    
   QQ = QQ.encode('utf-8')

pdf = FPDF()
pdf.add_page()
pdf.set_xy(0, 0)
pdf.set_font('arial', 'B', 13.0)
pdf.cell(40,10,QQ)
pdf.output('Before.pdf', 'F')



pdffile = open(r"Before.pdf", "rb")
pdfReader = PyPDF2.PdfFileReader(pdffile)
pdfWriter = PyPDF2.PdfFileWriter()
for pageNum in range(pdfReader.numPages):
    pdfWriter.addPage(pdfReader.getPage(pageNum))


pdfWriter.encrypt('123')
resultPDF = open(r"After.pdf", "wb")
pdfWriter.write(resultPDF)
resultPDF.close()
pdffile.close()

Answer 1

在您的代码中，您不需要编码utf-8，因为FPDF可以为您编码。请应用以下更改。它对我有用。在

   with open(b'hello.txt','r') as f:
    QQ = f.read()
    #QQ = QQ.encode('utf-8')

pdf = FPDF()
pdf.add_page()
pdf.set_xy(0, 0)
pdf.set_font('arial', 'B', 13.0)
pdf.cell(40,10,QQ)
pdf.output('Before.pdf', 'F')



pdffile = open(r"Before.pdf", "rb")
pdfReader = PyPDF2.PdfFileReader(pdffile)
pdfWriter = PyPDF2.PdfFileWriter()
for pageNum in range(pdfReader.numPages):
    pdfWriter.addPage(pdfReader.getPage(pageNum))


pdfWriter.encrypt('123')
resultPDF = open(r"After.pdf", "wb")
pdfWriter.write(resultPDF)
resultPDF.close()
pdffile.close()

Answer 2

最后我找到了答案 我有中文字体中文.txt这就是为什么不能成功转换成PDF格式， 所以需要下载萤火虫.ttf支持PDF中文显示。在

import PyPDF2
from fpdf import FPDF

with open'Chinese.txt') as f:
    QQ = f.read()

pdf = FPDF()
pdf.add_page()
pdf.add_font('fireflysung', '', 'fireflysung.ttf', uni=True)
pdf.set_font('fireflysung', '', 12)
pdf.set_xy(0, 0)

pdf.multi_cell(0,5,QQ) 
pdf.output('Before.pdf', 'F')


with open("Before.pdf", "rb") as pdffile:
    pdfReader = PyPDF2.PdfFileReader(pdffile)
    pdfWriter = PyPDF2.PdfFileWriter()
    for pageNum in range(pdfReader.numPages):
        pdfWriter.addPage(pdfReader.getPage(pageNum))

    pdfWriter.encrypt(a)
    with open("After.pdf", "wb") as resultPDF:
        pdfWriter.write(resultPDF)