Python 3 – os.fchdir() Method
Python is a popular programming language used for developing mobile applications, web applications, and even gaming software. The Python 3 os module provides a wide variety of methods that developers can use to interact with the file system of their operating system. One of these methods is os.fchdir().
The os.fchdir() method in Python changes the current working directory to the one specified by the file descriptor fd. In other words, it changes the current working directory to the one associated with the file descriptor.
Syntax
os.fchdir(fd)
Parameters
This method takes a single parameter as input, which is the file descriptor associated with the directory to be set as the current working directory.
Return Value
This method doesn’t return any value.
Example
Let’s dive into an example to understand how os.fchdir() method works:
import os
# Open the directory and get the file descriptor.
dir_fd = os.open("path/to/directory", os.O_RDONLY)
# Changes the current working directory to path/to/directory
os.fchdir(dir_fd)
# Prints the current working directory
print(os.getcwd())
# Close the directory
os.close(dir_fd)
In the above example, we first open a directory using the os.open() method and get its file descriptor. We then call the os.fchdir() method to set the opened directory as the current working directory. Finally, we use the os.getcwd() method to print the current working directory, which should return the path/to/directory. Finally, we close the directory using the os.close() method.
Code Language
The above code is written in Python. The .py extension is used for Python files.
Conclusion
The os.fchdir() method in Python is a handy way to change the current working directory to the directory associated with a file descriptor. By providing an easy way to work with the file system, os module makes Python a great choice of language for developers who require file system interaction in their projects.