如何使用PyPdf在pdf文件中逐行阅读？

Question

我有一些代码可以从pdf文件中读取.有没有办法在Windows上使用Pypdf,Python 2.6在pdf文件(而不是页面)中逐行读取？

以下是阅读pdf页面的代码:

import pyPdf

def getPDFContent(path):
    content = ""
    num_pages = 10
    p = file(path, "rb")
    pdf = pyPdf.PdfFileReader(p)
    for i in range(0, num_pages):
        content += pdf.getPage(i).extractText() + "\n"
    content = " ".join(content.replace(u"\xa0", " ").strip().split())
    return content

更新:

通话代码是这样的:

f= open('test.txt','w')
pdfl = getPDFContent("test.pdf").encode("ascii", "ignore")
f.write(pdfl)
f.close()

Answer 1

看起来你拥有的是一大块你想要逐行解释的文本数据.

您可以使用StringIO类将该内容包装为可搜索的类文件对象:

>>> import StringIO
>>> content = 'big\nugly\ncontents\nof\nmultiple\npdf files'
>>> buf = StringIO.StringIO(content)
>>> buf.readline()
'big\n'
>>> buf.readline()
'ugly\n'
>>> buf.readline()
'contents\n'
>>> buf.readline()
'of\n'
>>> buf.readline()
'multiple\n'
>>> buf.readline()
'pdf files'
>>> buf.seek(0)
>>> buf.readline()
'big\n'

在你的情况下,做:

from StringIO import StringIO

# Read each line of the PDF
pdfContent = StringIO(getPDFContent("test.pdf").encode("ascii", "ignore"))
for line in pdfContent:
    doSomething(line.strip())

Answer 2

import pyPdf  
def getPDFContent(path):
    content = ""
    num_pages = 10
    p = file(path, "rb")
    pdf = pyPdf.PdfFileReader(p)
    for i in range(0, num_pages):
        content += pdf.getPage(i).extractText() + "\n"
    content = " ".join(content.replace(u"\xa0", " ").strip().split())     
    return content 

Answer 3

使用yield并PdfFileReader.pages可以简化事情,

from pyPdf import PdfFileReader

def get_pdf_content_lines(pdf_file_path):
    with open(pdf_file_path) as f:
        pdf_reader = PdfFileReader(f)
        for page in pdf_reader.pages: 
            for line in page.extractText().splitlines():
                yield line

for line in get_pdf_content_lines('/path/to/file.pdf'):
    print line

另外,有些人可能谷歌"python获取pdf内容文本"所以这里是如何:(这是我如何到这里)

from pyPdf import PdfFileReader

def get_pdf_content(pdf_file_path):
    with open(pdf_file_path) as f:
        pdf_reader = PdfFileReader(f)
        content = "\n".join(page.extractText().strip() for page in pdf_reader.pages)
        content = ' '.join(content.split())
        return content


print get_pdf_content('/path/to/file.pdf')