Snowflake Exam DSA-C02 Topic 3 Question 32 Discussion

Actual exam question for Snowflake's DSA-C02 exam

Question #: 32
Topic #: 3

Consider a data frame df with columns ['A', 'B', 'C', 'D'] and rows ['r1', 'r2', 'r3']. What does the ex-pression df[lambda x : x.index.str.endswith('3')] do?

AReturns the row name r3

BResults in Error

CReturns the third column

DFilters the row labelled r3

Show Suggested Answer

Suggested Answer: D

It will Filters the row labelled r3.

by Annette at Sep 18, 2024, 06:56 AM

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Serina

10 months ago

This is a tough one, but I think I've got it. The lambda function is checking the row index, so the correct answer must be D. Though I can't help but wonder if the data frame is secretly a sentient being, just waiting to surprise us all.

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Eden

8 months ago

Haha, who knows, maybe the data frame is secretly sentient!

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Joesph

9 months ago

So the correct answer must be D.

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Cristy

9 months ago

I agree, the lambda function is checking the row index.

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Camellia

9 months ago

Haha, that would be quite the surprise if the data frame turned out to be sentient!

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Maurine

9 months ago

I think the correct answer is D, as it filters the row labelled r3.

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Izetta

9 months ago

I agree with you, the lambda function is indeed checking the row index.

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Ozell

10 months ago

I think you're right, it filters the row labelled r3.

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Estrella

10 months ago

Easy peasy! The lambda function is looking for rows where the index ends with '3', so the answer has to be D. Though I do wonder if the data frame has a sense of humor and will throw an error just to mess with us.

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Avery

10 months ago

Haha, the lambda function is like a secret code that only data scientists can crack! I'm going to go with D, because filtering rows seems like the most logical choice here.

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Gertude

10 months ago

Hmm, I'm not so sure about this one. It could be C, since the lambda function might be selecting the third column. But I'm leaning towards D, just to be safe.

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Deangelo

10 months ago

I'm not sure, but I think it could be A, returning the row name r3.

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Lea

10 months ago

Okay, let's go with D then.

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Luisa

10 months ago

I agree with User2, D seems more likely.

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Jesusita

10 months ago

I believe it's C, returning the third column.

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Bettina

10 months ago

I think it might be D too, filtering the row labelled r3.

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Leonie

10 months ago

I think it might be C, selecting the third column.

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Matthew

10 months ago

I'm not sure, I think it could be D, filtering the row labelled r3.

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Pauline

11 months ago

This is a tricky one! I think the correct answer is D, since the lambda function checks if the row index ends with '3', which would filter out just the row labeled 'r3'.

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