Why axis formatting matters in Matplotlib - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the x-axis label in a matplotlib plot.

Matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [4, 5, 6])
plt.xlabel([1])
plt.show()

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A'X Axis'

Bxlabel

CX Axis

Dplt.xlabel

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put the label text inside quotes.

Passing a variable name without defining it.

The xlabel function requires a string argument to label the x-axis. So, the label must be in quotes.

2fill in blank

medium

Complete the code to set the y-axis limits from 0 to 10.

Matplotlib

import matplotlib.pyplot as plt
plt.plot([1, 2, 3], [4, 5, 6])
plt.ylim([1])
plt.show()

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A(0, 10)

B[0, 10]

C0, 10

D{0:10}

Attempts:

3 left

💡 Hint

Common Mistakes

Using a list instead of a tuple.

Passing two separate arguments instead of a tuple.

The ylim function expects a tuple with two values for the limits.

3fill in blank

hard

Fix the error in the code to correctly format the x-axis ticks as percentages.

Matplotlib

import matplotlib.pyplot as plt
import matplotlib.ticker as mtick

fig, ax = plt.subplots()
ax.plot([0.1, 0.2, 0.3], [1, 2, 3])
ax.xaxis.set_major_formatter([1](xmax=1))
plt.show()

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Amtick.FuncFormatter

Bmtick.FormatStrFormatter

Cmtick.PercentFormatter

Dmtick.PercentFormatter()

Attempts:

3 left

💡 Hint

Common Mistakes

Calling PercentFormatter with parentheses before passing it.

Using the wrong formatter class.

PercentFormatter is a class and should be instantiated with xmax=1 to correctly format values between 0 and 1 as percentages.

4fill in blank

hard

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

Matplotlib

words = ['apple', 'bat', 'carrot', 'dog']
lengths = {word: [1] for word in words if [2]
plt.plot(list(lengths.values()))
plt.show()

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Alen(word)

Bword

Clen(word) > 3

Dword > 3

Attempts:

3 left

💡 Hint

Common Mistakes

Using the word itself 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 (len(word)) only if the length is greater than 3 (len(word) > 3).

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase words to their lengths only if the length is less than 6.

Matplotlib

words = ['apple', 'bat', 'carrot', 'dog']
result = { [1]: [2] for w in words if [3] }
plt.bar(result.keys(), result.values())
plt.show()

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Aw.upper()

Blen(w)

Clen(w) < 6

Dw.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

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

Checking length greater than 6 instead of less than 6.

The comprehension maps uppercase words (w.upper()) to their lengths (len(w)) only if the length is less than 6 (len(w) < 6).