Text placement with ax.text in Matplotlib - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add text at position (2, 3) on the plot.

Matplotlib

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot([1, 2, 3], [1, 4, 9])
ax.text(2, 3, [1])
plt.show()

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

A"Hello"

BHello

C2, 3

Dax.plot

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put the text inside quotes.

Passing numbers instead of a string as the text.

The ax.text function requires the text to be a string, so it must be in quotes.

2fill in blank

medium

Complete the code to place the text 'Peak' at the highest point on the plot.

Matplotlib

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
x = [1, 2, 3]
y = [1, 4, 9]
ax.plot(x, y)
ax.text(x[[1]], y[[1]], "Peak")
plt.show()

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

A0

B3

C1

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 3 which is out of range.

Using index 1 which is not the highest point.

The highest point is at index 2 (the third element) in the lists x and y.

3fill in blank

hard

Fix the error in the code to correctly place the text 'Center' at (0.5, 0.5).

Matplotlib

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.text([1], 0.5, 'Center')
plt.show()

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

A'0.5'

Bcenter

C0.5

D0,5

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number for the coordinate.

Using a comma instead of a dot for decimal.

The x coordinate must be a number, not a string or invalid syntax.

4fill in blank

hard

Fill both blanks to add text 'Max' at the maximum y value and align it to the right.

Matplotlib

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
x = [1, 2, 3, 4]
y = [2, 5, 1, 7]
ax.plot(x, y)
max_index = y.index(max(y))
ax.text(x[[1]], y[[2]], 'Max', ha='right')
plt.show()

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

Amax_index

B0

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using different indexes for x and y coordinates.

Using a fixed number instead of max_index.

Both blanks should use max_index to get the x and y coordinates of the max point.

5fill in blank

hard

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

Matplotlib

words = ['cat', 'elephant', 'dog', 'horse']
lengths = { [1]: [2] for [1] in words if len([3]) > 3 }

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

Aword

Blen(word)

Dwords

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'words' instead of 'word' in the comprehension.

Not using len(word) for the value.

Using different variable names inconsistently.

The dictionary comprehension uses 'word' as key, 'len(word)' as value, and filters words with length > 3.