List Comprehension

Main idea

Comprehension builds a new list from iterable rules.

Tip

Use only for simple readable transforms.

Watch out

Too complex one-liners.

Read this next

This lesson is about List Comprehension. You are in the Data Mastery part of the course.

Main idea:
Comprehension builds a new list from iterable rules.

How to learn it: type a very small program first. Run it. Change one line and run again.

Tip:
Use only for simple readable transforms.

Common mistake:
Too complex one-liners.

Your challenge:
Generate even numbers 1 to 100.

Scroll down to the challenge lab. Run your code there. When the output meets the task and the checks pass, press the green button to finish this topic.

Example code

Copy this example if it helps. Change it so it matches List Comprehension.

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

if __name__ == "__main__":
    main()

Challenge

Generate even numbers 1 to 100.

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 List Comprehension
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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