Python Text Processing 简明教程

Python - Process PDF

Python 可以读取 PDF 文件并从其中提取文本后打印出内容。为此，我们必须首先安装必需的模块，即 PyPDF2 。下面是安装模块的命令。python 环境中应该已经安装了 pip。

pip install pypdf2

成功安装此模块后，我们可以使用模块中提供的各个方法阅读 PDF 文件。

import PyPDF2

pdfName = 'path\Tutorialspoint.pdf'
read_pdf = PyPDF2.PdfFileReader(pdfName)
page = read_pdf.getPage(0)
page_content = page.extractText()
print page_content

当我们运行以上程序时，我们得到以下输出：

Tutorials Point originated from the idea that there exists a class of readers who respond better
to online content and prefer to learn new skills at their own pace from the comforts of their
drawing rooms.

The journey commenced with a single tutorial on HTML in 2006 and elated by the response
it generated, we worked our way to adding fresh tutorials to our repository which now
proudly flaunts a wealth of tutorials and allied articles on topics ranging from programming
languages to web designing to academics and much more.

Reading Multiple Pages

要阅读包含多页的 PDF，并使用页码打印每页内容，可以使用带 getPageNumber() 函数的循环。在以下示例中，我们有包含两页的 PDF 文件。内容将打印在两个独立的页眉下。

import PyPDF2

pdfName = 'Path\Tutorialspoint2.pdf'
read_pdf = PyPDF2.PdfFileReader(pdfName)

for i in xrange(read_pdf.getNumPages()):
    page = read_pdf.getPage(i)
    print 'Page No - ' + str(1+read_pdf.getPageNumber(page))
    page_content = page.extractText()
    print page_content

当我们运行以上程序时，我们得到以下输出：

Page No - 1
Tutorials Point originated from the idea that there exists a class of readers who respond better to
online content and prefer to learn new skills at their own pace from the comforts of their drawing
rooms.


Page No - 2

The journey commenced with a single tutorial on HTML in 2006 and elated by the response it
generated, we worked our way to adding fresh tutorials to our repository which now proudly flaunts
a wealth of tutorials and allied articles on topics ranging from p
rogramming languages to web
designing to academics and much more.