"""Solution 10.4.3 — Overriding the default

Chapter 10: Functions — Everyday Programming

Bug type: Logical

The call meant to keep the default 100 steps but passed 200 as the
override, giving 2 * 200 = 400. To get 200 for two days, pass 100 as the
per-day count (or omit it to use the default).

Exercise: ex_10_4_3.py
"""

def total_steps(days, per_day=100):
    return days * per_day

print(total_steps(2, 100))  # 200