Python实现简单拆分PDF文件的方法

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_end,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,file_name)
    f_w.writelines('time: '+now+' file name: '+file_name+' status: successn')
pdf_main()