python將單個檔案轉換為多個pdf檔案，但第二個檔案直到最后檔案內容從前一個檔案合并

我要做的是從所選目錄中讀取所有 pdf 檔案，然后我為從目錄中獲得的所有 pdf執行for 回圈。然后我用給定的密碼保護檔案。

假設我有 5 個檔案需要使用給定的密碼進行保護。使用正確內容成功保護的第一個檔案。但是第二個檔案直到五個檔案內容都與前一個檔案內容合并。

例如在第二個檔案中有第一個檔案內容和第二個檔案內容。在第三個檔案內容中有第一個檔案、第二個檔案和第三個檔案內容。

這是代碼：

import os
import datetime
from PyPDF2 import PdfFileReader, PdfFileWriter

def is_encrypted(filename: str) -> bool:
    with open(filename, 'rb') as f:
        pdf_reader = PdfFileReader(f, strict=False)
        return pdf_reader.isEncrypted

curdate = datetime.date.today()
folder = os.getcwd() "\\" curdate.strftime("%d-%m-%Y")

pdf2merge = []

for filename in os.listdir(folder):
    #print(filename)
    if filename.endswith('.pdf'):
        pdf2merge.append(filename)
    
pdf2merge.sort()

pdf_writer = PdfFileWriter()

for counter, filename in enumerate(pdf2merge):
    path_file = folder '/' filename
    splitExt = filename.split('.')
    splitExt.pop()
    joinName = '_'.join(splitExt)
    splitFile = joinName.split('_')
    password = splitFile.pop()
    enc_filename = str('_'.join(splitFile)) ".pdf"
    output_file = "payslip-encrypted/" enc_filename

    if is_encrypted(path_file):
        print("PDF File " filename " is already encrypted.")

    try:
        pdfFile = open(path_file, 'rb')
        pdf_reader = PdfFileReader(pdfFile, strict=False)

        for page_number in range(pdf_reader.numPages):
            pdf_writer.addPage(pdf_reader.getPage(page_number))
    except utils.PdfReadError:
        print("Error while reading PDF file " filename)

    pdf_writer.encrypt(user_pwd=password, use_128bit=True)

    pdfOut = open(output_file, "wb")
    pdf_writer.write(pdfOut)
    pdfOut.close()
    pdfFile.close()

    print("PDF file " os.getcwd() "\payslip-encrypted\\" enc_filename " encrypted successfully")

請更正代碼，以便每個檔案的內容都是正確的

uj5u.com熱心網友回復：

只是pdf_writer = PdfFileWriter()進入回圈。

import os
import datetime
from PyPDF2 import PdfFileReader, PdfFileWriter

def is_encrypted(filename: str) -> bool:
    with open(filename, 'rb') as f:
        pdf_reader = PdfFileReader(f, strict=False)
        return pdf_reader.isEncrypted

curdate = datetime.date.today()
folder = os.getcwd() "/" curdate.strftime("%d-%m-%Y")

pdf2merge = []

for filename in os.listdir(folder):
    #print(filename)
    if filename.endswith('.pdf'):
        pdf2merge.append(filename)
    
pdf2merge.sort()

for filename in pdf2merge:
    pdf_writer = PdfFileWriter()
    
    path_file = folder '/' filename
    splitExt = filename.split('.')
    splitExt.pop()
    joinName = '_'.join(splitExt)
    splitFile = joinName.split('_')
    password = splitFile.pop()
    enc_filename = str('_'.join(splitFile)) ".pdf"
    output_file = "payslip-encrypted/" enc_filename

    if is_encrypted(path_file):
        print("PDF File " filename " is already encrypted.")

    try:
        pdfFile = open(path_file, 'rb')
        pdf_reader = PdfFileReader(pdfFile, strict=False)

        for page_number in range(pdf_reader.numPages):
            pdf_writer.addPage(pdf_reader.getPage(page_number))
    except utils.PdfReadError:
        print("Error while reading PDF file " filename)

    pdf_writer.encrypt(user_pwd=password, use_128bit=True)

    pdfOut = open(output_file, "wb")
    pdf_writer.write(pdfOut)
    pdfOut.close()
    pdfFile.close()

    print("PDF file " os.getcwd() "\payslip-encrypted\\" enc_filename " encrypted successfully")

標籤：Python pdf 加密

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