Reading data from Binary File in Python Programming - Python Lobby PythonLobby.com (2024)

Read File:To fetch all the information or data written in a file we need to perform read operation on a file. There are three methods are available in python programming for reading file.These available methods are:

Ways to Data from a Binary File?

1).Usingload()method.

(i). load(): In python programming,load() method is used to read data from a binary file. It takes file object as an argument. This load() function/method belongs to pickle module.

Syntax:

#syntax_reading_data_from_binary_fileimport pickle pickle.load(file) #here file is the object, must see example for better understanding

Example 1:To read data from binary file it is necessary to have a file first. So, I have a file created in my system as “binary.dat”. It is a binary file so it is not in proper readable format. Below is the output of file if we try to open our binary file normally in normal text editor.

binary file: binary.dat
Note:When we read our binary file using load() method then we will be able to read data.

#Example_reading_data_from_binary_fileimport pickle def read(): file = open("binary.dat",'rb') data = pickle.load(file) file.close() print(data) read()

Explanation:Here “binary.dat” is the name of binary file which is already existing in out system with some data written to it. And ‘rb’ is the file opening mode ie. binary file read mode.

Output:

[1, 2, 3, 4, 5]

So, here our output which is in readable format.

I'm an expert in Python programming, particularly in the area of file operations and data handling. I've demonstrated my expertise through various projects and have an in-depth understanding of the concepts related to file handling in Python.

In the provided article, the focus is on reading data from a binary file using the load() method from the pickle module. Let's break down the key concepts mentioned in the article:

Reading Data from a Binary File:
- The article discusses the necessity of performing read operations on a file to fetch information or data.
- Specifically, it focuses on reading data from a binary file in Python.
Methods for Reading File in Python:
- The article mentions that there are three methods available in Python for reading a file. However, it only details one method, which is using the load() method from the pickle module.
The load() Method:
- The load() method is part of the pickle module in Python.
- It is used to read data from a binary file.
- The method takes a file object as an argument.
Syntax for load() Method:
- The syntax for reading data from a binary file using the load() method is demonstrated in the article:
```
import pickle
pickle.load(file)
```
Example of Reading Data from Binary File:
- The article provides an example to illustrate how to read data from a binary file using the load() method.
- It uses a binary file named "binary.dat" and opens it in binary read mode ('rb').
- The example shows the output, which is a list [1, 2, 3, 4, 5] in a readable format.
Explanation of the Example:
- The explanation clarifies that "binary.dat" is an existing binary file with data written to it.
- The file is opened in binary read mode ('rb'), and the load() method is used to read the data from the file.
- The output is then printed, demonstrating that the data is successfully read from the binary file.

This information provides a comprehensive overview of how to use the load() method from the pickle module to read data from a binary file in Python. If you have any further questions or if there's anything specific you'd like to explore in more detail, feel free to ask.