python 으로 pdf 에서 text 문자열 추출 (뽑아내기)

Extract text from PDF File using Python

All of you must be familiar with what PDFs are. In fact, they are one of the most important and widely used digital media. PDF stands for Portable Document Format. It uses .pdf extension. It is used to present and exchange documents reliably, independent of software, hardware, or operating system.

Extracting Text from PDF File

Python package PyPDF can be used to achieve what we want (text extraction), although it can do more than what we need. This package can also be used to generate, decrypting and merging PDF files.

Note: For more information, refer to Working with PDF files in Python

Installation

To install this package type the below command in the terminal.

pip install PyPDF2

Example:

Input PDF:

extract-pdf-text-python

filter_none

 

 

brightness_4

# importing required modules 
import PyPDF2 
    
# creating a pdf file object 
pdfFileObj = open('example.pdf', 'rb'
    
# creating a pdf reader object 
pdfReader = PyPDF2.PdfFileReader(pdfFileObj) 
    
# printing number of pages in pdf file 
print(pdfReader.numPages) 
    
# creating a page object 
pageObj = pdfReader.getPage(0
    
# extracting text from page 
print(pageObj.extractText()) 
    
# closing the pdf file object 
pdfFileObj.close() 

Output:

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extract-pdf-python

Let us try to understand the above code in chunks:

  • pdfFileObj = open('example.pdf', 'rb')

    We opened the example.pdf in binary mode. and saved the file object as pdfFileObj.

  • pdfReader = PyPDF2.PdfFileReader(pdfFileObj)

    Here, we create an object of PdfFileReader class of PyPDF2 module and  pass the pdf file object & get a pdf reader object.

  • print(pdfReader.numPages)

    numPages property gives the number of pages in the pdf file. For example, in our case, it is 20 (see first line of output).

  • pageObj = pdfReader.getPage(0)

    Now, we create an object of PageObject class of PyPDF2 module. pdf reader object has function getPage() which takes page number (starting form index 0) as argument and returns the page object.

  • print(pageObj.extractText())

    Page object has function extractText() to extract text from the pdf page.

  • pdfFileObj.close()

    At last, we close the pdf file object.

[출처] https://www.geeksforgeeks.org/extract-text-from-pdf-file-using-python/

 

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