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Exam Certified Associate Developer for Apache Spark topic 1 question 71 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 71
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

The code block shown below should return a new DataFrame where single quotes in column storeSlogan have been replaced with double quotes. Choose the response that correctly fills in the numbered blanks within the code block to complete this task.

A sample of DataFrame storesDF is below:



Code block:

storesDF.__1__(__2__, __3__(__4__, __5__, __6__))

  • A. 1. withColumn
    2. "storeSlogan"
    3. regexp_extract
    4. col("storeSlogan")
    5. "\""
    6. "'"
  • B. 1. newColumn
    2. storeSlogan
    3. regexp_extract
    4. col(storeSlogan)
    5. "\""
    6. "'"
  • C. 1. withColumn
    2. "storeSlogan"
    3. regexp_replace
    4. col("storeSlogan")
    5. "\""
    6. "'"
  • D. 1. withColumn
    2. "storeSlogan"
    3. regexp_replace
    4. col("storeSlogan")
    5. "'"
    6. "\""
  • E. 1. withColumn
    2. "storeSlogan"
    3. regexp_extract
    4. col("storeSlogan")
    5. "'"
    6. "\""
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by cookiemonster42 at July 31, 2023, 9:58 p.m.

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ARUNKUMARKRISHNASAMY
2 months ago
Selected Answer: D
In Python, the expression '"' (double quote inside single quotes) or \" (escaped double quote) both represent a double quote ("). In the correct answer D, the replacement part is written as: regexp_replace(col("storeSlogan"), "'", "\"") The first argument ("storeSlogan") refers to the column to be modified. The second argument ("'") specifies the single quote character to be replaced. The third argument ("\"" or '"') represents the double quote character that will replace the single quote. Since Python uses backslashes (\) to escape special characters, \" ensures that the double quote is correctly interpreted as part of the replacement string. So, in short: ✅ ' " ' and ' \" ' are equivalent in this case, both representing a double quote.
upvoted 1 times
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azure_bimonster
8 months, 3 weeks ago
Selected Answer: D
To me it would like this: storesDF.withColumn("storeSlogan", regexp_replace(col("storeSlogan"), " ' ", "\""))
upvoted 1 times
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cookiemonster42
1 year, 3 months ago
Selected Answer: D
D is correct, we need a replacement function with first argument "'"
upvoted 2 times
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