之前用过的pdfminer pip install pdfminer

# -*- coding: utf-8 -*-from bs4 import BeautifulSoupimport requestsimport refrom pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreterfrom pdfminer.converter import TextConverterfrom pdfminer.layout import LAParamsfrom cStringIO  import StringIO#from io  import StringIO for python3from io import openfrom pdfminer.pdfpage import PDFPagedef pdf_txt(url):    rsrcmgr = PDFResourceManager()    retstr = StringIO()    codec = 'utf-8'    laparams = LAParams()    device = TextConverter(rsrcmgr, retstr, codec=codec, laparams=laparams)    f = requests.get(url).content    fp = StringIO(f)    interpreter = PDFPageInterpreter(rsrcmgr, device)    password = ""    maxpages = 0    caching = True    pagenos = set()    for page in PDFPage.get_pages(fp,                                  pagenos,                                  maxpages=maxpages,                                  password=password,                                  caching=caching,                                  check_extractable=True):        interpreter.process_page(page)    fp.close()    device.close()    str = retstr.getvalue()    retstr.close()    return strtxt=tpdf_txt('http://pythonscraping.com/pages/warandpeace/chapter1.pdf')print txt#如果pdf含有中文，输出到文件#open('pdf.txt','wb').write(txt)python readpdf.py'''CHAPTER I"Well, Prince, so Genoa and Lucca are now just family estates oftheBuonapartes. But I warn you, if you don't tell me that thismeans war,if you still try to defend the infamies and horrorsperpetrated bythat Antichrist- I really believe he is Antichrist- I willhavenothing more to do with you and you are no longer my friend,no longermy 'faithful slave,' as you call yourself! But how do youdo? I seeI have frightened you- sit down and tell me all the news."It was in July, 1805, and the speaker was the well-knownAnnaPavlovna Scherer, maid of honor and favorite of theEmpress MaryaFedorovna. With these words she greeted PrinceVasili Kuragin, a manof high rank and importance, who was thefirst to arrive at herreception. Anna Pavlovna had had a cough forsome days. She was, asshe said, suffering from la grippe; grippebeing then a new word inSt. Petersburg, used only by the elite.All her invitations without exception, written in French,anddelivered by a scarlet-liveried footman that morning, ran as'''