net worth over time

fire.py

def fire(age, expected_death, expected_retirement, savings, income, spending, rate):
    import matplotlib.pyplot as plt
    age *= 10
    expected_death *= 10
    expected_retirement *= 10
    remaining_tenths_of_a_year = int(expected_death-age)
    ages = []
    savingses = []
    ages.append(age/10)
    savingses.append(savings)
    print('Age: ' + str(age/10) + ' Savings: ' + str(int(savings)))
    for i in range(remaining_tenths_of_a_year):
        savings *= (1 + rate / 100) ** (1/10)
        if 1 + age + i == expected_retirement:
            income = 0
        savings += (income - spending) / 10
        ages.append((age + i+1)/10)
        savingses.append(savings)
        print('Age: ' + str((age + i + 1)/10) + ' Savings: ' + str(int(savings)))
    plt.subplots()[1].plot(ages,savingses)
    plt.show()