用PDFMiner从PDF中提取文本文字

wget https://pypi.python.org/packages/57/4f/e1df0437858188d2d36466a7bb89aa024d252bd0b7e3ba90cbc567c6c0b8/pdfminer-20140328.tar.gz#md5=dfe3eb1b7b7017ab514aad6751a7c2ea

tar -zxvf pdfminer-20140328.tar.gz
cd pdfminer-20140328/
make cmap　　#防止中文乱码，否则处理中文会出现一大堆（CID:xxx）
sudo python setup.py install

from cStringIO import StringIO
from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from pdfminer.pdfpage import PDFPage
import sys
import string

def convert_pdf_2_text(path):
    rsrcmgr = PDFResourceManager()
    retstr = StringIO()
    device = TextConverter(rsrcmgr, retstr, codec=‘utf-8‘, laparams=LAParams())
    interpreter = PDFPageInterpreter(rsrcmgr, device)
    with open(path, ‘rb‘) as fp:
        for page in PDFPage.get_pages(fp, set()):
            interpreter.process_page(page)
        text = retstr.getvalue()
    device.close()
    retstr.close()
    return text

text = convert_pdf_2_text(sys.argv[1])
open(‘real?.txt‘,‘wb‘).write(text)