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7.3.4 Find the Error CodeHS Answers

We thoroughly check each answer to a question to provide you with the most correct answers. Found a mistake? Tell us about it through the REPORT button at the bottom of the page. Ctrl+F (Cmd+F) will help you a lot when searching through such a large set of questions.

The most common answer is:

my_string = “hello!”
One of the two lines below will cause an error.
Each line is an attempt to replace the first
letter of myString with H. Comment out the
line you think is incorrect.
def bad():
my_string[0] = “H”
BAD
my_string = “H” + my_string[1:]
print(my_string)

In Python, strings are immutable, meaning you cannot change their content once they are created. Attempting to directly modify a character in a string by index, as done in the bad() function definition, will result in a TypeError. The correct way to modify a string is to create a new string with the desired changes, as shown in the second approach. Therefore, the line that will cause an error is:

my_string[0] = “H”  # BAD - This will cause a TypeError because strings are immutable.

Here’s the corrected version of the code with the problematic line commented out and standard ASCII quotation marks used:

my_string = "hello!"

# def bad():
#     my_string[0] = "H"  # This line is incorrect and should be commented out.

my_string = "H" + my_string[1:]
print(my_string)

This demonstrates the correct approach to replacing the first letter of my_string with “H” by creating a new string that combines “H” with the rest of my_string starting from index 1.

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Quizzma Team

The Quizzma Team is a collective of experienced educators, subject matter experts, and content developers dedicated to providing accurate and high-quality educational resources. With a diverse range of expertise across various subjects, the team collaboratively reviews, creates, and publishes content to aid in learning and self-assessment.
Each piece of content undergoes a rigorous review process to ensure accuracy, relevance, and clarity. The Quizzma Team is committed to fostering a conducive learning environment for individuals and continually strives to provide reliable and valuable educational resources on a wide array of topics. Through collaborative effort and a shared passion for education, the Quizzma Team aims to contribute positively to the broader learning community.

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