PYTHON LESSON
if/else
if chooses one path based on condition result.
Write basic branch first, then refine.
Wrong indentation.
Read this next
This lesson is about if/else. You are in the Logic part of the course.
Main idea:
if chooses one path based on condition result.
How to learn it: type a very small program first. Run it. Change one line and run again.
Tip:
Write basic branch first, then refine.
Common mistake:
Wrong indentation.
Your challenge:
Create pass/fail decision from marks.
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 if/else.
# Topic: if/else
def main():
sample = "edit me"
# TODO: apply if/else concept here
result = sample
print("Result:", result)
if __name__ == "__main__":
main()
Challenge
Create pass/fail decision from marks.
Before you can finish: your output should include at least 12 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 if/else
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.