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os Module in Python

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os Module in Python
1. Working with Directories
You can perform various directory-related operations using the os module.

import os

# Get current working directory
cwd = os.getcwd()
print(cwd)

# Change directory
os.chdir("/path/to/directory")

# List directory contents
files = os.listdir('.')
print(files)





    
2. File Operations
The os module also allows you to perform file operations such as creating, removing, and renaming files.
# Create a new file
with open('test.txt', 'w') as f:
f.write('Hello, world!')

# Rename the file
os.rename('test.txt', 'new_test.txt')

# Remove the file
os.remove('new_test.txt')





    
3. Environment Variables
You can access and manipulate environment variables using the os module.
# Get an environment variable
home_dir = os.environ.get('HOME')
print(home_dir)

# Set an environment variable
os.environ['MY_VAR'] = 'my_value'





    
4. Path Manipulation
The os.path submodule provides functions for working with file and directory paths.

import os.path as path

# Check if a path exists
path_exists = path.exists('/path/to/file')
print(path_exists)

# Join paths
full_path = path.join('/path/to', 'file.txt')
print(full_path)

# Get the directory name
dir_name = path.dirname('/path/to/file.txt')
print(dir_name)
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