Javascript Change File Name

Michael Zippo 04.11.2021

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The Python os.rename () method changes the name of a file. os.rename () takes two arguments: the path to the old file and the path to the new file. The new file path must end with a different file name.

When working with files in Python, you may decide to rename a particular file. For example, if you have a file called raw_data.csv, you might want to rename it to old_data.csv when your program is running.

This is where the os.rename () method comes into play. The os.rename () method allows you to rename an existing file to Python.

This tutorial will cover, with examples, the basics of the os.rename () method. and how you can use it to rename files in Python.

Python Rename File

The Python os.rename () method renames a file. The file you are renaming must already exist. You must specify the path of the file you are renaming and the new path to the file. The new path must have a different name than the file you are renaming.

The syntax for os.rename () is as follows:

As you can see, rename () accepts two parameters. They are:

file: the path to the file you want to rename, followed by the name of the file (for example "/home/python_engineering/file.txt").
destination: the path of the file, followed by the new name of the file (for example "/home/python_engineering/file_new.txt").

The os.rename () method is part of the Python operating system library. This library provides functions related to your computer’s operating system, such as creating and deleting files.

To work with the. rename () the operating system, we need to import the operating system library:

Let’s take an example to show the os.rename () method in action.

Python file renaming example

Suppose you want to rename the raw_data.csv file to old_data.csv . raw_data.csv is stored in the / home / python_engineering directory. We could change the name of our file using this code:

Our code returns: File renamed ! Our code has also renamed our file.

All d ’first we import the os module. This allows us to access the os.rename () method.

Next, we dec larons two

Why do we want to change the name of our file in old_data. csv, our new_file_name variable ends with old_data.csv, instead of raw_data.csv.

Next, let’s use os.rename () to change the name of our file. Then our code displays "File renamed !" on the console, so that we know our program has been executed.

Python Rename Multiple Files

Now suppose you want to rename multiple files. We can also achieve this by using the os.rename () method.

Let’s say we want to rename each file to / home / python_engineering and add old_ to the start of each file name. Currently, this directory contains the following files:

data.csv
raw_data.csv
program.py

We could use the following program to add old_ at the start of each filename:

Our code renames our files. Here is a list of the new files in our directory:

old_data.csv
old_raw_data.csv
old_program.py

We are going to analyze how our code works. First, we import os into our code, so that we can work with os.rename () and os.listdir () methods. Next, we create a for loop that iterates through a list of all the files in the / home / python_engineering folder. This list is generated using the os.listdir () method.

So our code uses os.rename () to rename each file to / home / python_engineering We use a Python f string to replace each filename with / home / python_engineering / old_ {FILE_NAME}, where FILE_NAME is the name of our old file.

As you can see, old_ has been added to the start of each file in / home / python_engineering < / em>.

Conclusion

The os.rename () method allows you to rename files in Python. When used with the os.listdir (), you can use os.rename () to rename all files in a folder.

This tutorial has been covered, with examples, the basics of os and how to use the os.rename () method. You are now ready to start using ire os.rename () to rename files like a Python pro !

Want to learn more about programming in Python ? Check out our Python Learning Guide . You’ll find the best tips on learning Python and a list of learning resources curated by experts to help you on your journey.