
def tax(subtotal):
    return subtotal * 0.08875


tax(700)

62.125


700 + tax(700)

762.125


sum = 700
sum = sum + sum * 0.08875 #add taxes

sum

762.125


def set_a():
    a = 10
    print('the value of a is', a)


set_a()

the value of a is 10


a = 20
print('initial value of a is', a)
set_a()
print('new value of a is', a)

initial value of a is 20
the value of a is 10
new value of a is 20


def scoped(a, b):    #a and b are like input pins
    third= b + b - a
    return third

a = 10
b = 20
third = 12
scoped(2,4)

6


l = [3, 4 ,6, 9]


for num in l:
    print(num)


for e in l:
    print(e)


for num in l:
    print(num*2)

6
8
12
18


def mean(sequence):
    total = 0
    for element in sequence:
        total = total + element
    return total / len(sequence)


mean([3, 4, 5])

4.0


tryout = [6, -6, 6]
mean(tryout)

2.0


x = 5


type(x)

int


type(5)

int


x = 'bazooka'


type(x)

str


a = 'knock'
b = ' knock'
print(a+b)

knock knock


len('ciao') #returns how many characters the string has

4


len(['helo', 'spippolo']) #returns the n of elements

2


len('spippolo')

8


len(5)

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_4562/4108502181.py in <module>
----> 1 len(5)

TypeError: object of type 'int' has no len()


len(str(5))

1


'9' + 'HELLO' + str(8)

'9HELLO8'


vol = [4.0, 2.0, 3.0, 5.5]
result = []
for element in vol:
    result = result + [element * 2]

print(result)

[8.0, 4.0, 6.0, 11.0]


def double(sequence):
    result = []
    for i in sequence:
        result = result + [i*2]
    return result


words = ['ciao', 'panzanella']
double('words')

['ww', 'oo', 'rr', 'dd', 'ss']


double(words)

['ciaociao', 'panzanellapanzanella']


2+2 == 4

True


2+2==3

False


2+2 == 3+1

True


'hello' == 'hello'

True


'hello' == 'ciao'

False


ciao = 'hello'
ciao == 'hello'

True


def secret(word):
    if word == 'struzzo':
        return 'oh yeah'
    else:
        return 'prrrrrr'


secret('guess')

'prrrrrr'


secret('struzzo')

'oh yeah'


 def secret(word):
        return (word == 'struzzo')


secret('struzzo')

True

4/0

---------------------------------------------------------------------------
ZeroDivisionError                         Traceback (most recent call last)
/tmp/ipykernel_4562/1580332654.py in <module>
----> 1 4/0

ZeroDivisionError: division by zero


'hi'*2

'hihi'


'hihi'/2

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_4562/2892899560.py in <module>
----> 1 'hihi'/2

TypeError: unsupported operand type(s) for /: 'str' and 'int'


#half of each


def half(sequence):
    result = []
    for element in sequence:
        result = result + [element/2]
    return result


half([4, 5, 7])

[2.0, 2.5, 3.5]


def onethird(seq):
    result = []
    for i in seq:
        result = result + [i/3]
    return result


onethird([5, 6, 8])

[1.6666666666666667, 2.0, 2.6666666666666665]


#exclaim


def exclaim(seq):
    result = []
    for i in seq:
        result = result + [i + '!']
    return result


exclaim(['orco', 'diga'])

['orco!', 'diga!']


exclaim(['ciccio', str(8)])

['ciccio!', '8!']


#emptyness


def has_no_elements(sequence):
    return (sequence == [])


has_no_elements([2])

False


#sum three


def sum_three(a, b, c):
    d = a + b + c
    return d


sum_three(2,3,4)

9


#ten times each


def ten_t_each(sequence):
    result = []
    for i in sequence:
        result = result + [i*10]
    return result


ten_t_each([3, 45])

[30, 450]


#positive numbers


def positive(seq):
    result = []
    for i in seq:
        if i > 0 :
            result = result + [i]
    return len(result)


positive([1,-2,-4,5])

2


def pulse(seq):
    result = 0
    for i in seq:
        if i > 0 :
            result = result + i
    return result


pulse([3, -9, 5])

8


#free-proj doubledouble pro 2


def doubledouble(seq):
    result = []
    for i in seq:
        result = result +[i*4]
    return result


doubledouble(['ahy', 'amor'])

['ahyahyahyahy', 'amoramoramoramor']


def doubledouble2(seq):
    result = []
    for i in seq: 
        result = result + ['nice '+i]
    return result


doubledouble2(['t-shirt', 'shoes', 'book'])

['nice t-shirt', 'nice shoes', 'nice book']