Python实现简单拆分PDF文件的方法

本文实例讲述了Python实现简单拆分PDF文件的方法。分享给大家供大家参考。具体如下：

依赖pyPdf处理PDF文件
切分pdf文件

使用方法：
1）将要切分的文件放在input_dir目录下
2）在configure.txt文件中设置要切分的份数（如要切分4份，则设置part_num=4）
3）执行程序
4）切分后的文件保存在output_dir目录下
5）运行日志写在pp_log.txt中

P.S. 本程序可以批量切割多个pdf文件

    from pyPdf import PdfFileWriter, PdfFileReader
    import os
    import time
    import sys
    def part_pdf(input_file, output_file, config_count, f_w, now, file_name):
      file1 = file(input_file, 'rb')
      pdf = PdfFileReader(file1)
      pdf_pages_len = len(pdf.pages)
      if config_count <= pdf_pages_len:
        ye = pdf_pages_len / config_count
        lst_ye = pdf_pages_len % config_count
        part_count = 0
        part_count_ye = 0
        for fen in range(config_count):
          part_count += 1
          if part_count == config_count:
            part_ye = ye + lst_ye
          else:
            part_ye = ye
          write_pdf(pdf, part_count_ye, part_count_ye+part_ye, fen, output_file)
          part_count_ye += ye
      else:
        f_w.writelines('time: '+now+' file name: '+file_name+' status: part_num > pdf pages [error]\n')
        sys.exit(1)
    def write_pdf(pdf, part_count_ye, part_count_ye_end, fen, output_file):
      out = PdfFileWriter()
      for pp in range(part_count_ye, part_count_ye_end):
        out.addPage(pdf.getPage(pp))
      ous = file(output_file+'_'+str(fen+1)+'.pdf', 'wb')
      out.write(ous)
      ous.close()
    def pdf_main():
      f = open('configure.txt', 'r')
      f_w = open('pp_log.txt', 'a')
      now = time.strftime('%Y-%m-%d %H:%M:%S')
      for i in f:
        i_ = i.strip()
        aa = i_.split('=')[1]
        if i_.find('part_num=') != -1 and aa.isdigit():
          config_count = int(aa)
        else:
          f_w.writelines('time: '+now+' status: part_num in configure.txt is error [error]\n')
          sys.exit(1)
      files = os.listdir('input_dir/')
      for each in files:
        input_file = 'input_dir/'+each
        file_name = input_file[input_file.index('/'):input_file.index('.')]
        output_file = 'output_dir/'+file_name
        part_pdf(input_file, output_file, config_count, f_w, now, file_name)
        f_w.writelines('time: '+now+' file name: '+file_name+' status: success\n')
    pdf_main()

希望本文所述对大家的Python程序设计有所帮助。