Hello, I'm getting an error for question 5 and I don't understand how to prevent it. My code is as follows: "import string string.ascii_lowercase from random import shuffle x = [[i] for i in range(26)] shuffle(x) letters = list(string.ascii_lowercase) numbers = x solution = dict(zip(letters,numbers)) import matplotlib.pyplot as plt letters,numbers = zip(*solution.items()) print(letters) print(numbers) plt.bar(letters,numbers) plt.show()" Thanks!

Hey, Thank you for your question and your solution to the exercise! The documentation of matplotlib's bar() method instructs that both the first and the second argument the method takes in have to be either float or array-like objects. Typing type(letters) type(numbers) in your code, you will see that those variables are, in fact, tuples. We therefore need to convert them to array-like objects in order to use the bar() method. The following piece of code could do that: import numpy as np letters = np.asarray(letters) numbers = np.asarray(numbers).reshape(1, 26)[0] plt.bar(letters,numbers) plt.show() Here, I redefine the letters and numbers variables such that they are both ndarray objects containing 26 elements. Hope this helps! Kind regards, 365 Hristina

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Crystal Brown

Last answered:

17 Aug 2022

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16 Aug 2022

Question 5 "Only length -1 arrays can be converted to Python scalars while plot showing

in Python Programmer Bootcamp / Import counters (Part I)

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Hristina Hristova

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Posted on:

17 Aug 2022

Question 5 "Only length -1 arrays can be converted to Python scalars while plot showing

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