[HOMEWORK] HW 2 required

andrea.sterbini (172780 points)
514 935 1789
asked Oct 22, 2020 in News by andrea.sterbini (172,780 points)
edited Oct 23, 2020 by andrea.sterbini


  • Corrections to the exercise text will be posted here
    • the resulting scores should be returned as a list of integers
    • If, in Windows, you get a syntax error in file testlib.py
      • either reinstall Anaconda version 2020.07
      • or change line 46 of testlib.py from 
      • print(f"Importing {name} (globals, locals, {fromlist=}, {level=}) (not allowed)")
      • to

      • print(f"Importing {name} (globals, locals, {fromlist}, {level}) (not allowed)")
  • NOTICE: to disable some safety checks and the timeout, change test_01.py by setting DEBUG=True


To complete the homework:

  • Install all the required libraries
  • Download the HW2req.zip file and unzip it in a directory
    • The archive contains:
      • a problem to be solved, described at the beginning of file program01.eng.py;
        • your job is to complete the ex1 function inside program01.eng.py to solve the problem – adding other functions is allowed;
      • a file named program01.txt where you should describe your algorithm in English (keep it anonymous: no id/names or source code);
      • all other libraries and test files needed to run tests on your machine.
  • Enter the HW2req directory created by unzipping the archive and
    • rename program01.eng.py as program01.py and edit the file to solve the problem;
    • edit file program01.txt to describe your algorithm.
  • NOTICE: the program should not use input() or print(). All needed parameters are passed to the ex1 function by the test system. Your results are returned to the tests by using return.
  • BEWARE: global variables are forbidden.
  • BEWARE: it's forbidden to import other libraries apart from the ones already imported in the text.
  • NOTICE: your program should be applicable to any correct input (do not exploit data repetitions or particularities).
    • if __name__ == '__main__':
      • # Here you can enter your own test instructions
  • To test your program:
    • open an “Anaconda Prompt” window and enter the HW2req directory
    • run the following command
      • pytest test_01.py -v -rA
    • or (test printing also a list of the slowest runs)
      • pytest test_01.py -v -rA --durations 0
    • or (test printing a list of the 20 slowest functions executed)
      • pytest test_01.py -v -rA --profile
    • To stop tests at the first error, add the -x option
    • If you use Spyder:
      • you can run tests from Spyder by first installing the spyder-unittest plugin (but you cannot add parameters to the test execution);
      • you can profile the functions from Spyder by first installing the spyder-line-profiler plugin.

NOTICE: to open and edit text files in the UTF8 format, DO NOT use Notepad (as it does not handle well the Unix linefeed character '\n'). Use Spyder or Notepad++ instead.

First deadline: 23:59 of 1st November 2020 (REQUIRED FOR EVERYBODY)

  • The first deadline is strict and EVERYBODY should submit both their files
  • On the 2nd of November, you will be assigned up to 3 anonymous algorithms to assess and suggest improvements
  • Submit your assessments and suggestions by 23:59 of November the 3rd
  • You will receive up to 3 suggestions from your peers
  • You will have time until 23:59 of November the 5th to evaluate ALL the suggestions received and re-submit new, better programs


You are required to submit BOTH the program01.py and the program01.txt files

To do so, go to page https://q2a.di.uniroma1.it/homeworks/delivery?homework=2 and submit both files

After some minutes/hours, the homework leaderboard will be updated with your tests results, conducted in a standardized virtual machine.

You can submit your program more than once. The latest submission is the one that counts.

1 Answer

Dario_loi (1710 points)
0 3 10
answered Oct 22, 2020 by Dario_loi (1,710 points)
sorry for the naïve question, but are we supposed to return the scores in the form of a list?

thank you.
Francesco.Danese (2130 points)
0 1 9
commented Oct 22, 2020 by Francesco.Danese (2,130 points)
Same question, what type does the return have to be? A list of the four scores (each one an integer)?
andrea.sterbini (172780 points)
514 935 1789
commented Oct 22, 2020 by andrea.sterbini (172,780 points)
Right, it's a list of integers, I have added a notice above, thanks.