python-3.x - pdfminer python 3.5

Question

我已经遵循了一些教程，但我无法让这个代码块运行，我做了从 StringIO 到 BytesIO 的必要切换(我相信？)

我不确定为什么“香蕉”什么也没打印，我认为错误可能是红鲱鱼？这与我遵循 python2.7 教程并尝试将其转换为 python3 有关吗？

errors: File "/Users/foo/PycharmProjects/Try/Pdfminer.py", line 28, in <module>
    banana = convert("A1.pdf")
  File "/Users/foo/PycharmProjects/Try/Pdfminer.py", line 19, in convert
    infile = file(fname, 'rb')
NameError: name 'file' is not defined

脚本

from io import BytesIO

from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from pdfminer.pdfpage import PDFPage

def convert(fname, pages=None):
    if not pages:
        pagenums = set()
    else:
        pagenums = set(pages)

    output = BytesIO()
    manager = PDFResourceManager()
    converter = TextConverter(manager, output, laparams=LAParams())
    interpreter = PDFPageInterpreter(manager, converter)

    infile = file(fname, 'rb')
    for page in PDFPage.get_pages(infile, pagenums):
        interpreter.process_page(page)
    infile.close()
    converter.close()
    text = output.getvalue()
    output.close
    return text

banana = convert("A1.pdf")
print(banana)

这个变体也会发生同样的事情:

from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from pdfminer.pdfpage import PDFPage
from io import BytesIO

def convert_pdf_to_txt(path):
    rsrcmgr = PDFResourceManager()
    retstr = BytesIO()
    codec = 'utf-8'
    laparams = LAParams()
    device = TextConverter(rsrcmgr, retstr, codec=codec, laparams=laparams)
    fp = file(path, 'rb')
    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)

    text = retstr.getvalue()

    fp.close()
    device.close()
    retstr.close()
    return text

Banana = convert_pdf_to_txt("A1.pdf")
print(Banana)

我试过搜索这个(大部分pdfminer代码来自 this或 this)但没有运气。

任何见解都值得赞赏。

干杯

Answer 1

有是 的解决方案Python 3.5 : 你需要pdfminer.six .在 下win10 我可以很容易地安装它

pip install pdfminer.six

您可以检查安装的版本

pdfminer.__version__

我还没有对它进行深入测试。但我可以运行以下代码进行转换 pdf→文本 和 pdf→html