pdf如何用python读取？

pip install pdfminer

pip install pdfminer3k

from urllib.request import urlopen

from pdfminer.pdfinterp import PDFResourceManager, process_pdf

from pdfminer.converter import TextConverter

from pdfminer.layout import LAParams

from io import StringIO

from io import open

def readPDF(pdfFile):

    rsrcmgr = PDFResourceManager()

    retstr = StringIO()

    laparams = LAParams()

    device = TextConverter(rsrcmgr, retstr, laparams=laparams)

    process_pdf(rsrcmgr, device, pdfFile)

    device.close()

    content = retstr.getvalue()

    retstr.close()

    return content

pdfFile = urlopen("http://pythonscraping.com/pages/warandpeace/chapter1.pdf")

outputString = readPDF(pdfFile)

print(outputString)

pdfFile.close()