print('hello _world');

person_name = 'кеша' # строка

print(type(person_name))
age = 30 # int
print(type(age))
period = 3.2 # float
print(type(period))
is_good = True # boolean
print(type(is_good))
person = None  #Nonetype
print(type(person))


# число к строке
birthday_year = '1980'
print(type(birthday_year))

period = 20
print(type(period))

age = int(birthday_year) + period
print(age)
# Строку к числу
some_str = birthday_year + str(period)
print (some_str)
# при сложении строк будет конкотенация строк



