Why file handling is required in Python - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to open a file named 'data.txt' for reading.

Python

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

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

Ar

Bw

Ca

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'w' or 'a' mode when you want to read a file.

To read a file, you open it with mode 'r'.

2fill in blank

medium

Complete the code to write the string 'Hello' to a file named 'output.txt'.

Python

with open('output.txt', '[1]') as f:
    f.write('Hello')

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

Ar

Bw

Ca

Dx

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'r' mode when trying to write to a file.

Use mode 'w' to write to a file, which creates or overwrites it.

3fill in blank

hard

Fix the error in the code to read all lines from 'log.txt'.

Python

with open('log.txt', 'r') as f:
    lines = f.[1]()

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

Areadline

Bclose

Cwrite

Dreadlines

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'readline()' when all lines are needed.

The method 'readlines()' reads all lines into a list.

4fill in blank

hard

Fill both blanks to create a dictionary with words as keys and their lengths as values, only for words longer than 3 letters.

Python

words = ['apple', 'cat', 'banana', 'dog']
lengths = {word: [1] for word in words if len(word) [2] 3}

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Alen(word)

B>

C<

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' in the condition.

Use len(word) to get length and '>' to filter words longer than 3 letters.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase words as keys, their lengths as values, only for words longer than 4 letters.

Python

words = ['tree', 'house', 'car', 'elephant']
result = { [1]: [2] for w in words if len(w) [3] 4 }

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Aw.upper()

Blen(w)

C>

Dw.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using w.lower() instead of w.upper().

Using '<' instead of '>'.

Use w.upper() for keys, len(w) for values, and '>' to filter words longer than 4 letters.