Annotating specific points in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add an annotation at point (2, 4) with text 'Point A'.

Matplotlib

import matplotlib.pyplot as plt

plt.plot([1, 2, 3], [3, 4, 5])
plt.annotate('Point A', xy=(2, 4), xytext=[1])
plt.show()

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

A(2, 5)

B(3, 5)

C(1, 3)

D(2, 3)

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same coordinates for xytext as xy causing overlap.

Forgetting to import matplotlib.pyplot as plt.

The xytext parameter sets the position of the annotation text. (3, 5) places the text slightly above and to the right of the point (2, 4).

2fill in blank

medium

Complete the code to annotate the point (3, 5) with an arrow pointing to it.

Matplotlib

import matplotlib.pyplot as plt

plt.plot([1, 2, 3], [3, 4, 5])
plt.annotate('Max', xy=(3, 5), xytext=(4, 6), arrowprops=[1])
plt.show()

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

A{'linestyle': '--'}

B{'color': 'red'}

C{'linewidth': 2}

D{'arrowstyle': '->'}

Attempts:

3 left

💡 Hint

Common Mistakes

Passing a string instead of a dictionary to arrowprops.

Not specifying arrowstyle causing no arrow to appear.

The arrowprops dictionary defines the style of the arrow. {'arrowstyle': '->'} draws a simple arrow pointing from the text to the point.

3fill in blank

hard

Fix the error in the code to correctly annotate the point (1, 3) with text 'Start'.

Matplotlib

import matplotlib.pyplot as plt

plt.plot([1, 2, 3], [3, 4, 5])
plt.annotate('Start', xy=[1], xytext=(0, 4))
plt.show()

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

A(1, 3)

B[1, 3]

C'(1, 3)'

D(3, 1)

Attempts:

3 left

💡 Hint

Common Mistakes

Using a list instead of a tuple for xy.

Passing coordinates as a string.

The xy parameter requires a tuple of coordinates. Using (1, 3) is correct. Lists or strings cause errors.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps each word to its length only if the length is greater than 3.

Matplotlib

words = ['data', 'science', 'is', 'fun']
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.

Checking if the word is greater than 3 instead of its length.

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

5fill in blank

hard

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

Matplotlib

words = ['AI', 'ML', 'Data', 'Code']
result = {{ [1]: [2] for w in words if [3] }}

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Aw.upper()

Blen(w)

Clen(w) > 2

Dw.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using the original word instead of uppercase.

Not filtering words by length correctly.

The comprehension maps the uppercase version of each word (w.upper()) to its length (len(w)) only if the length is greater than 2 (len(w) > 2).