Appending data to files in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to open a file named 'log.txt' in append mode.

Python

file = open('log.txt', '[1]')

Drag options to blanks, or click blank then click option'

Ar

Ba

Cw

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'w' mode which overwrites the file.

Using 'r' mode which is read-only.

To add data to the end of a file without deleting existing content, use mode 'a' for append.

2fill in blank

medium

Complete the code to write the string 'Hello\n' to the file object named 'file'.

Python

file.[1]('Hello\n')

Drag options to blanks, or click blank then click option'

Awrite

Bread

Cappend

Dopen

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to use a method named 'append' which does not exist.

Using 'read' which is for reading, not writing.

The write method adds text to the file.

3fill in blank

hard

Fix the error in the code to properly close the file after writing.

Python

file = open('log.txt', 'a')
file.write('Data\n')
file.[1]()

Drag options to blanks, or click blank then click option'

Aopen

Bflush

Cclose

Dwrite

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'flush' instead of 'close' which does not close the file.

Calling 'open' again instead of closing.

Always close a file after writing to save changes and free resources.

4fill in blank

hard

Fill both blanks to append the number 5 as a string to the file 'numbers.txt'.

Python

with open('numbers.txt', '[1]') as f:
    f.[2]('5\n')

Drag options to blanks, or click blank then click option'

Aa

Bw

Cwrite

Dappend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'w' mode which overwrites the file.

Trying to use a method named 'append' which does not exist.

Open the file in append mode 'a' and use the write method to add text.

5fill in blank

hard

Fill all three blanks to append squares of numbers 1 to 3 to 'squares.txt', each on a new line.

Python

with open('squares.txt', '[1]') as f:
    for i in range(1, 4):
        f.[2](str(i[3]2) + '\n')

Drag options to blanks, or click blank then click option'

Aa

Bwrite

C**

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '*' instead of '**' for exponentiation.

Using 'w' mode which overwrites the file.

Open in append mode 'a', use write to add text, and use '**' to square the number.