Mastering Text File Handling in Python

What is the purpose of the 'open' function in Python?

• To open a file and return a file object for reading or writing.

• To delete a file from the system.

• To create a new file without opening it.

• To close a file and free up system resources.

How do you read the entire content of a text file in Python?

• content = readfile('filename.txt')

• content = open('filename.txt').read()

• content = open('filename.txt', 'r').read()

• content = read('filename.txt')

What method would you use to write data to a text file?

• Utilize the 'writefile' method directly on the file object.

• Use the 'open' function with 'write' mode and the 'write' method.

• Open the file in 'read' mode and modify its contents.

• Use the 'append' function with 'read' mode.

Explain the difference between 'read()', 'readline()', and 'readlines()'.

• 'read()' reads a specific number of bytes, 'readline()' reads all lines, and 'readlines()' reads the whole file.

• 'read()' reads all lines into a list, 'readline()' reads the whole file, and 'readlines()' reads one line.

• 'read()' reads the whole file, 'readline()' reads one line, and 'readlines()' reads all lines into a list.

• 'read()' reads a single line, 'readline()' reads the whole file, and 'readlines()' reads a specific number of lines.

How can you append data to an existing text file?

• Open the file in read mode and write the data.

• Open the file in append mode and write the data.

• Delete the existing file and create a new one with the data.

• Open the file in write mode and overwrite the data.

What does the 'with' statement do when handling files?

• The 'with' statement allows multiple files to be opened simultaneously.

• The 'with' statement requires manual file closure after use.

• The 'with' statement prevents file access errors.

• The 'with' statement automatically closes the file after its block of code is executed.

How can you handle exceptions when working with file operations?

• Close the file before performing any operations.

• Always ignore exceptions when they occur.

• Use try-except blocks to catch and handle exceptions during file operations.

• Use print statements to debug file operations.

What is the significance of the 'encoding' parameter in file handling?

• The 'encoding' parameter specifies the file size limit.

• The 'encoding' parameter is used to set file permissions.

• The 'encoding' parameter is significant as it determines how text data is encoded and decoded during file operations.

• The 'encoding' parameter determines the file format type.

How do you close a file after opening it?

• Call the 'end()' function to close the file.

• Use the 'close()' method on the file object.

• Use the 'delete()' method on the file object.

• Simply remove the file object from memory.

What is the result of trying to read a file that does not exist?

• The program continues without any issues.

• The system automatically creates a new file.

• An error is raised indicating the file does not exist.

• The file opens successfully with default content.