sudo pip install pdfminer;

# -*- coding: utf-8 -*-  
from pdfminer.pdfparser import PDFParser 
from pdfminer.pdfdocument import PDFDocument 
from pdfminer.pdfpage import PDFPage 
from pdfminer.pdfpage import PDFTextExtractionNotAllowed 
from pdfminer.pdfinterp import PDFResourceManager 
from pdfminer.pdfinterp import PDFPageInterpreter 
from pdfminer.pdfdevice import PDFDevice 
from pdfminer.layout import * 
from pdfminer.converter import PDFPageAggregator 
import os 
fp = open('test.pdf', 'rb') 
#来创建一个pdf文档分析器 
parser = PDFParser(fp) 
#创建一个PDF文档对象存储文档结构 
document = PDFDocument(parser) 
# 检查文件是否允许文本提取 
if not document.is_extractable: 
 raise PDFTextExtractionNotAllowed 
else: 
 # 创建一个PDF资源管理器对象来存储共赏资源 
 rsrcmgr=PDFResourceManager() 
 # 设定参数进行分析 
 laparams=LAParams() 
 # 创建一个PDF设备对象 
 # device=PDFDevice(rsrcmgr) 
 device=PDFPageAggregator(rsrcmgr,laparams=laparams) 
 # 创建一个PDF解释器对象 
 interpreter=PDFPageInterpreter(rsrcmgr,device) 
 # 处理每一页 
 for page in PDFPage.create_pages(document): 
  interpreter.process_page(page) 
  # 接受该页面的LTPage对象 
  layout=device.get_result() 
  for x in layout: 
   if(isinstance(x,LTTextBoxHorizontal)): 
    with open('output.txt','a') as f: 
     f.write(x.get_text().encode('utf-8')+'\n')