harmaja | Experimental frontend framework | Frontend Framework library

Sorry, I'm not quite sure how to describe my issue.

For an online python course I'm following there's an exercise I can't figure out. (raise NotImplementedError() refers to lines I need to input code).

The line of code station_years = 2019 - station_start_years[selected_station] is what I'm stuck on. I'm aiming for the list "station_start_years" to chose its value based on my selected_station value, which is based on station_names.

num = int(input('select a station: ')) was inserted by me so may be wrong.

Thanks for any help, I've read through the exercises but am lost.

station_names = ['Harmaja', 'Kaisaniemi', 'Kaivopuisto', 'Kumpula', 'lighthouse', 'Malmi airfield', 'Suomenlinna aaltopoiju', 'Vuosaari harbour']

station_start_years = [1989, 1844, 1904, 2005, 2003, 1937, 2016, 2012]

Below we can define the selected station: #raise NotImplementedError()

num = int(input('select a station: '))

selected_station = station_names[num]

Next we find the location of the selected station in the list of station names:

station_index = station_names.index(selected_station)

Now we can calculate the years the station has been operational:

raise NotImplementedError()

​

station_years = 2019 - station_start_years[selected_station]

Now, we can print the station name and number of years of operation to the screen. A sample print statement on screen is 'The Helsinki Harmaja station has been operational for 30 years.' The print statements should work for all listed stations only by modifying the selected_station -variable that is defined earlier in this problem.

raise NotImplementedError()