Python File Handling Basics

How can you read from a file in Python?

• open('file.txt', 'r').read()

• open('file.txt', 'w').read()

• read('file.txt')

• file.open('file.txt', 'read')

What is the method to write to a file in Python?

• Use the 'open' function with 'r' mode, 'write' method to write content, and 'close' method to close the file.

• Use the 'write' function with 'w' mode, 'open' method to open the file, and 'close' method to close the file.

• Use the 'open' function with 'w' mode, 'write' method to write content, and 'close' method to close the file.

• Use the 'read' function with 'w' mode, 'write' method to write content, and 'close' method to close the file.

Why is it important to close a file after operations in Python?

• To release system resources and ensure data is written properly.

• To speed up file operations

• To save memory space

• To increase system performance

How can you handle errors in file operations in Python?

• Use try-except blocks to handle specific errors that may occur during file operations.

• Ignore errors that occur during file operations.

• Use if-else statements to handle errors in file operations.

• Handle errors by restarting the Python interpreter.

What is the significance of working with file paths in Python file handling?

• Working with file paths in Python file handling has no impact on data management.

• File paths in Python file handling are only used for decorative purposes.

• Python file handling does not support file paths.

• File paths in Python file handling are essential for specifying the location of files on the system, enabling reading, writing, and managing data effectively.

Explain the process of reading a file line by line in Python.

• open('file.txt', 'r').readlines():

• with open('file.txt', 'r') as file: for line in file: print(line)

• file.read():

• for line in file.readlines():

Discuss the different modes used for opening a file in Python.

• Different modes used for opening a file in Python are 'r', 'w', 'a', 'r+', 'w+', and 'a+'.

• z

• y

• x

What are some common exceptions that can occur during file operations in Python?

• ValueError

• FileNotFoundError, PermissionError, IOError, OSError

• IndexError

• SyntaxError

How can you check if a file exists at a specified path in Python?

• import os file_path = 'path/to/file' if os.path.exists(file_path): print('File exists') else: print('File does not exist')

• Verify file existence with 'file_exists' method

• Use the 'check_file' function

• Check the file using 'file_check' module

Explain the concept of file permissions in Python file handling.

• File permissions refer to the number of lines a file can contain in Python file handling.

• File permissions determine the color scheme of the file in Python file handling.

• File permissions are used to control the font size in Python file handling.

• File permissions in Python file handling refer to the access rights given to users or groups to read, write, or execute a file. These permissions are represented using a 3-digit octal number where each digit corresponds to the permission type for the owner, group, and others.