Steps Into Kilometres — medium Python for AI problem | Incognition

Steps Into Kilometres

10 pts · 10 coins

Python for AIMedium

Steps Into Kilometres

A fitness app needs a step counter. The counting part is general, so it goes in a parent.

Counter (the parent):

Counter() takes no values. It sets count to 0.
add(amount) adds amount to count.
reset() sets count back to 0.

StepCounter (a child of Counter, with no __init__ of its own):

distance_km() returns count * 0.0008, rounded to 2 decimal places. (One step is 0.8 metres.)

Then write two functions:

walk_distance(walks): make a StepCounter, add each number of steps in the list, and return distance_km().
steps_since_reset(before, after): make a StepCounter. Add every number in before, then call reset(), then add every number in after. Return count.

Examples

walks = [1000, 2500]

returns 2.8

before = [500, 700]

after = [300]

returns 300

Hints

solution.py

1class Counter:
2    # your code here
3    pass
4
5
6class StepCounter:
7    # your code here
8    pass
9
10
11def walk_distance(walks):
12    # your code here
13    pass
14
15
16def steps_since_reset(before, after):
17    # your code here
18    pass
19