Finding duplicates

A new update to the data pipeline feeding into ride_sharing has added the ride_id column, which represents a unique identifier for each ride.

The update however coincided with radically shorter average ride duration times and irregular user birth dates set in the future. Most importantly, the number of rides taken has increased by 20% overnight, leading you to think there might be both complete and incomplete duplicates in the ride_sharing DataFrame.

In this exercise, you will confirm this suspicion by finding those duplicates. A sample of ride_sharing is in your environment, as well as all the packages you've been working with thus far.

This exercise is part of the course

Cleaning Data in Python

Exercise instructions

Find duplicated rows of ride_id in the ride_sharing DataFrame while setting keep to False.
Subset ride_sharing on duplicates and sort by ride_id and assign the results to duplicated_rides.
Print the ride_id, duration and user_birth_year columns of duplicated_rides in that order.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Find duplicates
duplicates = ____.____(____, ____)

# Sort your duplicated rides
duplicated_rides = ride_sharing[____].____('____')

# Print relevant columns of duplicated_rides
print(duplicated_rides[['____','____','____']])

Edit and Run Code

This exercise is part of the course

Cleaning Data in Python

IntermediateSkill Level

4.8+

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In this chapter, you'll learn how to overcome some of the most common dirty data problems. You'll convert data types, apply range constraints to remove future data points, and remove duplicated data points to avoid double-counting.

Exercise 1: Data type constraints Exercise 2: Common data types Exercise 3: Numeric data or ... ?Exercise 4: Summing strings and concatenating numbers Exercise 5: Data range constraints Exercise 6: Tire size constraints Exercise 7: Back to the future Exercise 8: Uniqueness constraints Exercise 9: How big is your subset?Exercise 10: Finding duplicates

Current Exercise

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