File handling in Python refers to the process of CRUD operations i.e., creating, reading, updating, and deleting files using the built-in file operations in Python.

In this blog you will be able to understand the creation of file and different operations performed on python files.

Files are used for storing information and handling of these files are important aspect to learn. Python file handling is a simple aspect when you follow this tutorial and practice the operations specified.

We can observe files are being created in this example and extension of python file is of type .txt i.e., text format.Also we can run a python file after it get’s created.

Python File Handling Video Tutorial :

You can find all the above stated examples in this video tutorial.

Create a file :

Creating a file and adding some data. Here you can also notice the python file extension which is specified with file name before.

Make sure you specify correct extension of python file such that you can open / read it after it’s creation. Also you need to perform python file close after every write or append.

To write to a file, open the file in write mode and use the write() method to write data to the file.

Here we have specified ‘x’ such that it creates the file after opening the file rather than reading.

f = open('file.txt', 'x')

f.write('python')

f.close()

Read a file :

To open a file in Python, use the open() function. The open() function takes two parameters, the filename and the mode in which you want to open the file.

Once the file is opened, you can read its contents. There are several methods to read a file in Python. The most common one is the read() method, which reads the entire file.

Reading a file which we have created by logging python file in console you can find output as shown below.Also you can see ‘r’ which specifies read is performed.

f = open('file.txt', 'r')

print(f.read())

output :

python

Append a file :

Adding some extra information to the file which we have created and python file close is performed after it.Then when you read the information complete data is printed with old and new changes.

Here we have specified ‘a’ such that it appends the information after opening the file rather than reading.

f = open('file.txt', 'a')

f.write(' program')

f.close()

Close a file:

It is essential and good practice to close a file after reading or writing to it. You can do this using the close() method.Can observe in our examples we have closed all the files after the use.

f.close()

Exception handling:

Handling errors are most important to make a error free software When working with files, errors can occur. To handle these errors, you can use a try-except block.

Not only in files this handling can be used to handle errors through out the code.

If you have any query’s in this tutorial on file handling do let us know in the comment section below. If you like this tutorial do like and share us for more interesting updates..

Go through the complete python course video tutorial’s here for detailed implementation.