Worksheet #24090802 Introduction to files

Multiple Choice Questions (MCQs)

1. What type of file stores data in a human-readable format?
   • a) Binary File
   • b) CSV File
   • c) Text File
   • d) Image File
2. Which of the following modes opens a file for writing and reading, truncating the file to zero length?
   • a) r+
   • b) w+
   • c) a+
   • d) r
3. In Python, what does the readline() method do?
   • a) Reads a single character
   • b) Reads a line from the file
   • c) Writes a line to the file
   • d) Reads the entire file at once
4. Which method is used to write a single line of text to a file?
   • a) writeline()
   • b) write()
   • c) writechar()
   • d) appendline()
5. What is the default mode in which a file is opened if no mode is specified?
   • a) w
   • b) r
   • c) a
   • d) r+
6. Which method is used to move the file pointer to a specific position in a file?
   • a) seek()
   • b) move()
   • c) tell()
   • d) point()
7. In which mode can you read and append to a file without truncating it?
   • a) r+
   • b) a+
   • c) w+
   • d) r
8. Which of the following is an example of an absolute path?
   • a) /home/user/documents/file.txt
   • b) documents/file.txt
   • c) ./file.txt
   • d) ../file.txt
9. What is the difference between the read() and readlines() methods?
   • a) read() reads a single line, readlines() reads the entire file
   • b) read() reads the entire file, readlines() reads a single line
   • c) read() reads the entire file, readlines() reads all lines as a list
   • d) Both methods do the same thing
10. Which file mode is used to open a file for appending data without reading its content?

• a) a
• b) w
• c) r+
• d) w+

Programming Questions

1. Write a Python program to open a text file, write “Hello, World!” to the file, and close it.
2. Create a program that reads a text file and displays its content line by line using readline().
3. Write a program to append a new line of text to an existing file. If the file does not exist, create it.
4. Write a Python program that reads the first 10 characters of a text file and displays the file pointer position using tell().
5. Develop a program to copy the content of one text file to another text file.
6. Write a Python program to open a file using the with clause and read the entire file using read().
7. Create a program that opens a text file and reads its content until the end of the file using a loop.
8. Write a program that reads a CSV file and prints each row in the file.
9. Develop a Python program that opens a text file, moves the file pointer to the middle of the file using seek(), and reads the next 20 characters.
10. Write a Python program that counts the number of lines, words, and characters in a text file.