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  3. Analyzing Police Activity with pandas

Exercise

Counting protective frisks

During a vehicle search, the police officer may pat down the driver to check if they have a weapon. This is known as a "protective frisk."

In this exercise, you'll first check to see how many times "Protective Frisk" was the only search type. Then, you'll use a string method to locate all instances in which the driver was frisked.

Instructions

100 XP
  • Count the search_type values in the ri DataFrame to see how many times "Protective Frisk" was the only search type.
  • Create a new column, frisk, that is True if search_type contains the string "Protective Frisk" and False otherwise.
  • Check the data type of frisk to confirm that it's a Boolean Series.
  • Take the sum of frisk to count the total number of frisks.