2. Integer number

2.1. Defining

>>> net_salary = 8000
>>> print(net_salary)
8000

2.2. Checking types

>>> type(net_salary)
<class 'int'>

Comparing types: string and integer

>>> salary_str = '8000'
>>> salary_str == net_salary
False

2.3. Converting types

>>> salary_converted = int(salary_str)
>>> salary_converted == net_salary
True

2.4. Operations on digits

After salary increase we get 5% more money

>>> net_salary = net_salary*1.05
>>> print(net_salary)
8400.0

>>> type(net_salary) == float
True

>>> type(net_salary)
<class 'float'>

2.5. Adding

  • we received 200 PLN monthly bonus

>>> net_salary += 200
>>> net_salary = int(net_salary)
>>> print(net_salary)
8600

2.6. Integer division

  • We want to calculate net income per person in 3 persons family,

  • We want to round the income to the 2nd decimal place (rounding)

>>> print(round(net_salary / 3, 2))
2866.67

>>> net_salary // 3
2866

>>> round(net_salary / 3)
2867

As we see we lost precision. Values after commas has been ignored

2.7. Modulo division

  • We want to check if our salary is even (divisible by two)

>>> print(net_salary % 2)
0

There is no reminder so it’s even number