KwickClips Python · 42 sec · free
Known count?
Short answer. Use for.
Unknown count?
Use while.
Pick the loop
| Loop | Use when | Example |
|---|---|---|
| for | count known | table of 7 |
| for | over items | each letter |
| while | count unknown | digit sums |
| while | wait for event | correct guess |
Remember
| Known count: for |
| Unknown count: while |
Two loops. How do you pick one? Is the count known? Use for when it is known. Use for to go over items. Use while when it is unknown. Use while to wait for an event. Known count means for. Unknown count means while.
This clip is from the full lesson: while Loop, break and continue — 8 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 10 Computer Applications (165), CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), CBSE Class 11 Informatics Practices (065)
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