Quick Check 6.1 – Data 100, Summer 2020

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Here are two Pandas expressions from lecture.

Which of the following is/are true? More than one might be true. *

Expression 1 evaluates to a Series.

Both expressions evaluate to the same thing.

As Pandas code, Expression 2 is more idiomatic than Expression 1.

Required

(Spring 2020 Checkpoint) We will be looking at the contest dataframe which contains data from a math contest in 2019.

Each value in the "Contestant" column contains both the name and the id of each contestant. Which of the following lines of code creates a new column id that contains the id of each contestant? Assume all ids are of length 5 and each entry of the Contestant column are formatted the same way and there are no spaces before or after any of the id-name pairs. (You might need to look some stuff up for this question.) *

contest['id'] = contest['Contestant'].str[1:5]

contest['id'] = contest['Contestant'].str.split('-')[0]

contest['id'] = contest['Contestant'].str[:5]

contest['id'] = contest['Contestant'].str[:, 5]

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