Instance Methods

Main idea

Methods operate on object state through self.

Tip

Keep methods cohesive.

Watch out

Missing self parameter.

Read this next

You will study Instance Methods. It belongs to the Object-Oriented Programming phase.

Remember this:
Methods operate on object state through self.

Practice step by step. Do not rush. Each run should show you something new.

Tip:
Keep methods cohesive.

Avoid this:
Missing self parameter.

Your challenge:
Bank account deposit and withdraw methods.

Go to the challenge lab below. Fix errors until the output looks right. Then press the green button to complete the topic.

Example code

Copy this example if it helps. Change it so it matches Instance Methods.

# Topic: Instance Methods
def main():
    sample = "edit me"
    # TODO: apply Instance Methods concept here
    result = sample
    print("Result:", result)

if __name__ == "__main__":
    main()

Challenge

Bank account deposit and withdraw methods.

Before you can finish: your output should include at least 16 characters; at least 1 non-empty line(s); no crash traceback—fix errors until the program runs cleanly.

Use Run. Read the output. Change your code until the task is done.

Starter reference

# Challenge starter for Instance Methods
def solve():
    # Write your solution here
    pass

print("Update solve() and run")

Your code

The first Run may load Python in your browser (one-time). Later runs are faster.

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