from pyPdf import PdfFileWriter, PdfFileReaderimport osimport timeimport sysdef 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()