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File Processing Set-1

Leave a Comment / O Level Tests / By brcinstitute111@gmail.com

Instruction:-

Number of Questions : 25

Total Marks : 25

Each question carry 1 Marks.

No negative marking

Results

#1. Which method is used to read the entire content of a file?

readfile()

read()

readline()

get()

#2. What does the ‘a’ mode do when opening a file?

Reads file

Appends to file

Overwrites file

Deletes file

#3. Which of the following opens a file for reading in binary mode?

'rb'

'r+b'

'r'

'wb'

#4. What is the use of seek() method?

Searches file

Moves file pointer

Closes file

Deletes file

#5. Which keyword is used to close a file in Python?

stop()

closefile()

end()

close()

#6. What happens if you open a non-existent file in read mode?

File is created

Error is raised

Nothing happens

Empty file is returned

#7. Which function returns one line from a file?

readline()

read()

readall()

readlineall()

#8. Which mode is used to overwrite the file content?

'r'

'a'

'x'

'w'

#9. What is the default file mode in Python?

'w'

'a'

'r'

'rb'

#10. What does the with statement ensure when used with files?

Better performance

Automatic file closing

File locking

File encryption

#11. Which of the following modes is used to open a file for both reading and writing in text mode?

'w+'

'r+'

'a+'

All of the above

#12. What does file.tell() return?

File size

Number of lines

Current file pointer position

File name

#13. How do you open a file for exclusive creation?

'x'

'e'

'n'

'c'

#14. What happens if you use read() on a closed file?

Returns empty string

Returns None

Raises ValueError

Reopens file

#15. Which method is used to write a list of strings to a file?

write()

writeline()

writelines()

print()

#16. The correct way to write “Hello” to a file is:

file.write(Hello)

file.write("Hello")

file("Hello")

file.add("Hello")

#17. What does the flush() method do?

Empties a file

Clears memory buffer

Deletes content

Ends file session

#18. Which file mode allows reading and writing without truncating the file?

'w+'

'r+'

'w'

'a+'

#19. Which statement best defines the difference between readline() and readlines()?

Both are same

readline() reads one line; readlines() reads all lines into a list

readlines() reads one line; readline() reads all

None of the above

#20. Which method checks if the file is closed?

isopen()

file.closed

check()

isClosed()

#21. Which method reads the file line by line using a loop?

for line in file:

file.each()

file.byline()

file.line()

#22. Which file mode creates a new file if it doesn’t exist or truncates it if it does?

'x'

'r'

'w'

'a'

#23. Which file mode is used to append content to an existing file?

'r+'

'w+'

'a'

'x'

#24. In which mode can we read and append to the same file?

'a+'

'w+'

'r+'

'rw'

#25. How do you ensure a file is automatically closed after accessing it?

Use try-finally

Use with open()

Use file.close() manually

Use auto-close module

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Results

#1. Which method is used to read the entire content of a file?

#2. What does the ‘a’ mode do when opening a file?

#3. Which of the following opens a file for reading in binary mode?

#4. What is the use of seek() method?

#5. Which keyword is used to close a file in Python?

#6. What happens if you open a non-existent file in read mode?

#7. Which function returns one line from a file?

#8. Which mode is used to overwrite the file content?

#9. What is the default file mode in Python?

#10. What does the with statement ensure when used with files?

#11. Which of the following modes is used to open a file for both reading and writing in text mode?

#12. What does file.tell() return?

#13. How do you open a file for exclusive creation?

#14. What happens if you use read() on a closed file?

#15. Which method is used to write a list of strings to a file?

#16. The correct way to write “Hello” to a file is:

#17. What does the flush() method do?

#18. Which file mode allows reading and writing without truncating the file?

#19. Which statement best defines the difference between readline() and readlines()?

#20. Which method checks if the file is closed?

#21. Which method reads the file line by line using a loop?

#22. Which file mode creates a new file if it doesn’t exist or truncates it if it does?

#23. Which file mode is used to append content to an existing file?

#24. In which mode can we read and append to the same file?

#25. How do you ensure a file is automatically closed after accessing it?

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