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【Python】简单拆分PDF文件

作者:willzhao / 发布于2015/7/17/ 421

简单拆分PDF文件，将一个PDF文件拆分成指定份数使用方法： 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


	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()

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