C1M1_Assignment Exercise 1b: code is correct to run but error for runing "# Test your code!"

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END CODE HERE

Can get the Expected Output:
Title: Brave New World
Author: Aldous Huxley
Published: 1932
Available Copies: 4

Test your code!

test_your_code.exercise_1b()

Error text (in red):
Failed test case: Variable initialization detected in the code. Please remove any variable assignments and use only print statements.
Grader expected: No variable initializations
You got: Variable initialization(s) found: book_title =, author =, year_published =, available_copies

[gent.spah]

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Failed test case: Variable initialization detected in the code. Please remove any variable assignments and use only print statements.

This means that you should not initiate (create) any variables there, or print statements are expected!

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Thank you!