Lab 5: Files


  • Due: Wednesday, June 19th no later than 5pm.
  • Submission instructions: upload solution, entitled to the BrightSpace Lab 5 Dropbox.
  • Deadline reminder: once this deadline passes, BrightSpace will no longer accept your Python submission and you will no longer be able to earn credit. Thus, if you are not able to fully complete the assignment, submit whatever you have before the deadline so that partial credit can be earned.

Learning outcomes

Gain experience with files.


  • Download the file earthquakes.csv. Note: the older version of the file that includes the location.full field (which had commas in it) can be found here: earthquakes_old.csv This input file is described in detail here.
  • Download into the same directory where the earthquakes.csv file is located and rename it according to the instructions in the Logistics section.
  • Implement the average_magnitude function such that it calculates and returns the average magnitude of the recorded earthquakes.
  • Implement the earthquake_locations function such that it identifies every unique location (use the name field in the file) and prints them in alphabetical order.
  • Implement the count_earthquakes function. The function should calculate the number of recorded earthquakes that have a magnitude greater than or equal to the low bound and less than or equal to the high bound. The user will specify the bounds and you may assume that the user will enter valid numbers.

Sample output

In this sample run, the user input 5.0 for the lower bound and 6.0 for the upper bound.

Grading - 10 points

2 points - the average_magnitude function is correct.

3 points - The earthquake_locations function finds all of the unique locations (2 points) and prints each unique location once in sorted order (1 point).

3 points - The count_earthquakes function is correct. The function will be tested on a different case that will be revealed after the lab is submitted. The test case is a lower bound of 3.14 and an upper bound of 4.22. The correct answer is 217.

2 points - The format of the output matches exactly the format of the output transcript. For each type of difference, 1 point will be deducted.

Grading turnaround

All labs graded with scores recorded in BrightSpace no later than lab time (2pm) the following day.