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. PyPDF2 is a pure-python PDF library capable of splitting, merging together, cropping, and transforming the pages of PDF files. It can also add. Python can read PDF files and print out the content after extracting the text from it. For that we have to first install the required module which is PyPDF2. Below is.
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You can USE PyPDF2 package #install pyDF2 pip install PyPDF2 # importing all the required modules import PyPDF2 # creating an object file. PyPDF2 does not have a way to extract images, charts, or other media from PDF documents, but it can extract text and return it as a Python string. To start. For this tutorial, I'll be using Python , you can use any version you PyPDF2 (To convert simple, text-based PDF files into text readable by.
Its primary purpose is to extract text from a PDF. In fact, PDFMiner can tell you the exact location of the text on the page as well as information about fonts.
For Python 2. PDFMiner is not compatible with Python 3. You can find it here: The directions for installing PDFMiner are out-dated at best. You can actually use pip to install it:.
If you want to install PDFMiner for Python 3 which is what you should probably be doing , then you have to do the install like this:. The documentation on PDFMiner is rather poor at best.
You will most likely need to use Google and Stack Overflow to figure out how to use PDFMiner effectively outside of what is covered in this post. Sometimes you will want to extract all the text in the PDF.
The PDFMiner package offers a couple of different methods that you can use to do this. We will look at some of the programmatic methods first. You can get a copy here: The PDFMiner package tends to be a bit verbose when you use it directly. Here, we import various bits and pieces from various parts of PDFMiner.
However, I think we can kind of follow along with the code. The first thing we do is create a resource manager instance. Our next step is to create a converter. Finally, we create a PDF interpreter object that will take our resource manager and converter objects and extract the text.
The last step is to open the PDF and loop through each page. Usually, you will want to do work on smaller subsets of the document instead. This will allow us to examine the text, one page at a time:.
Chapter 13 – Working with PDF and Word Documents
In this example, we create a generator function that yields the text for each page. This is where we could add some parsing logic to parse out what we want. You will note that the text may not be in the order you expect. So you will definitely need to figure out the best way to parse out the text that you are interested in. According to the source code of pdf2txt. The pdf2txt. We will use the w9. Open up a terminal and navigate to the location that you have saved that PDF or modify the command below to point to that file:.
You can also make pdf2txt. HTML is not recommended, as the markup pdf2txt generates tends to be ugly. However, here is a snippet to give you an idea of what it looks like:. Unfortunately, it does not appear to be Python 3 compatible.
Note that the latest version is 0. If it does not, then you can install slate directly from GitHub:. As you can see, to make slate parse a PDF, you just need to import slate and then create an instance of its PDF class.
You will also note that we can pass in a password argument if the PDF has a password set. If you look at the content of the PDF, you can see that there is a lot of text data, table data, graphs, maps etc. It did serve my requirement but PDFtables. I liked this solution much better and I am using it for my work. But it can extract text and return it as a Python string.
Reading a PDF document is pretty simple and straight forward. The purpose of writing this page with tables into separate pdf file is that I used PDFTables for extracting data. The problem with this is that if there are tables in the document, the text in the tables is extracted in-line with the rest of the document text. To do so, you need to call the read function on the myfile variable, as shown below:.
Now if you try to call the read method again, you will see that nothing will be printed on the console:. This is because once you call the read method, the cursor is moved to the end of the text. Therefore, when you call read again, nothing is displayed since there is no more text to print. A solution to this problem is that after calling the read method, call the seek method and pass 0 as the argument. This will move the cursor back to the start of the text file.
Look at the following script to see how this works:. Once you are done working with a file, it is important to close the file so that other applications can access the file. To do so, you need to call the close method. Instead of reading all the contents of the file at once, we can also read the file contents line by line. To do so, we need to execute the readlines method, which returns each line in the text file as list item.
In many cases this makes the text easier to work with.
For example, we can now easily iterate through each line and print the first word in the line. The former opens a file in the write mode, while the latter opens the file in both read and write mode. If the file doesn't exist, it will be created.
If you want to avoid this then you'll want to append text instead, which I cover below as well. In the script above, we write text to the file and then call the seek method to shift the cursor back to the start and then call the read method to read the contents of the file.
In the output, you will see the newly added content as shown below:. Often times, you dont simply need to wipe out the existing contents of the file. Rather, you may need to add the contents at the end of the file.
Again create a file with the following contents and save it as "myfile. Finally, before moving on to the next section, let's see how context manager can be used to automatically close the file after performing the desired operations.
Using the with keyword, as shown above, you don't need to explicitly close the file. Rather, the above script opens the file, reads its contents, and then closes it automatically. In addition to text files, we often need to work with PDF files to perform different natural language processing tasks. By default, Python doesn't come with any built-in library that can be used to read or write PDF files.
Rather, we can use the PyPDF2 library. Before we can use the PyPDF2 library, we need to install it. If you are using pip installer, you can use the following command to install PyPDF2 library:.
Extracting data from PDFs using Python
Alternatively, if you are using Python from Anaconda environment, you can execute the following command at the conda command prompt:. It is important to mention here that a PDF document can be created from different sources like word processing documents, images, etc. In this article, we will only be dealing with the PDF documents created using word processors. For the PDF documents created using images, there are other specialized libraries that I will explain in a later article.
For now, we will only work with the PDF documents generated using word processors. To read a PDF document, we first have to open it like any ordinary file.
Python - Process PDF
Look at the following script:. It is important to mention that while opening a PDF file, the mode must be set to rb , which stands for "read binary" since most of the PDF files are in binary format.
Usually, you will want to do work on smaller subsets of the document instead.