Text annotations in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a text annotation at coordinates (2, 3) on the plot.

Matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [1, 4, 9])
plt.[1](2, 3, 'Point')
plt.show()

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

Atitle

Blabel

Ctext

Dannotate

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'annotate' instead of 'text' for simple text placement.

Trying to use 'label' which is not a matplotlib function.

Using 'title' which sets the plot title, not text at coordinates.

The text function adds text at specified coordinates on the plot.

2fill in blank

medium

Complete the code to add an annotation with an arrow pointing to (2, 4) with text 'Max'.

Matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [1, 4, 9])
plt.annotate('Max', xy=(2, 4), xytext=(3, 5), arrowprops=[1])
plt.show()

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

A{'arrowstyle': '->'}

B{'style': '->'}

C{'arrow': '->'}

D{'arrowstyle': '-->'}

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'style' instead of 'arrowstyle' as the key.

Using 'arrow' which is not a valid key.

Using '-->' which is not a recognized arrow style.

The arrowprops dictionary must include 'arrowstyle' to define the arrow style.

3fill in blank

hard

Fix the error in the code to correctly place an annotation with an arrow.

Matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [1, 4, 9])
plt.annotate('Peak', xy=(3, 9), xytext=(2, 7), arrowprops=[1])
plt.show()

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

A{'arrowstyle': '->'}

B'arrowstyle': '->'

C{'arrowstyle': '->', 'color': 'red'}

D{'arrow': '->'}

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a string instead of a dictionary for arrowprops.

Using an invalid key like 'arrow' instead of 'arrowstyle'.

Forgetting the braces around the dictionary.

The arrowprops argument must be a dictionary. Option A is missing braces, and D uses an invalid key.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps words to their lengths only if length is greater than 3.

Matplotlib

words = ['data', 'science', 'ai', 'ml']
lengths = {word: [1] for word in words if [2]

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Alen(word)

Blen(word) > 3

Cword

Dword > 3

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself as the value instead of its length.

Using the word in the condition instead of its length.

Using incorrect comparison operators.

The dictionary comprehension maps each word to its length using len(word). The condition filters words with length greater than 3 using len(word) > 3.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase words to their lengths if length is greater than 2.

Matplotlib

words = ['cat', 'dog', 'a', 'bird']
result = { [1]: [2] for w in words if [3] }

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Aw.upper()

Blen(w)

Clen(w) > 2

Dw

Attempts:

3 left

💡 Hint

Common Mistakes

Using the original word as key instead of uppercase.

Using the word itself as value instead of length.

Incorrect condition for filtering.

The dictionary comprehension uses w.upper() as keys, len(w) as values, and filters words with length greater than 2.