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KwickClips Python · 42 sec · free

Known count?

Short answer. Use for.

Unknown count?

Use while.

Pick the loop

LoopUse whenExample
forcount knowntable of 7
forover itemseach letter
whilecount unknowndigit sums
whilewait for eventcorrect 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)

More KwickClips from this lesson

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