def triangle_area(height, width):
    area = (height*width)/2
    return area

triangle_area(7, 9)

31.5

print("Första raden")

def calc_double(value):
    new_value = value * 2
    print("värdet på value:", value)
    print("värdet på new_value:", new_value)
    return new_value

def main():
    print("Nu körs main()")
    value = 5
    double = calc_double(value)
    print("Dubbla värdet är", double)

main()
print("Nu är programmet slut!")

def add_1_and_print(value):
    print(value+1)

add_1_and_print(1)

2

def add_1_and_return(value):
    return value+1

print(add_1_and_return(1))

2

print(add_1_and_return(add_1_and_return(1)))

3

def add_1_and_print(value):
    print(value+1)

add_1_and_print(1)

2

add_1_and_print(add_1_and_print(1))

2

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[54], line 1
----> 1 add_1_and_print(add_1_and_print(1))

Cell In[53], line 2, in add_1_and_print(value)
      1 def add_1_and_print(value):
----> 2     print(value+1)

TypeError: unsupported operand type(s) for +: 'NoneType' and 'int'

def calc_double(value):
    new_value = value * 2
    print("värdet på value inne i calc_double:", value)
    print("värdet på new_value:", new_value)
    return value

value = 10
print("värdet på value utanför:", value)
calc_double(value)

värdet på value utanför: 10
värdet på value inne i calc_double: 10
värdet på new_value: 20

10

print("värdet på value utanför:", value)

värdet på value utanför: 10

print("värdet på new_value:", new_value)

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[66], line 1
----> 1 print("värdet på new_value:", new_value)

NameError: name 'new_value' is not defined

if boolean:
    # Code block that runs if boolean is True

print(1 != 2)

True

def calculate_price(rider_age):
    price = 30
    if rider_age < 12:
        price = 0
    return price

print(calculate_price(12))

30

if boolean:
    # Code that runs if boolean is True
else:
    # Code that runs if boolean is False

def calculate_price(rider_age):
    if rider_age < 12:
        price = 0
    else:
        price = 30
    return price

print(calculate_price(5))

0

if boolean_a:
    # Code that runs if boolean_a is True
else:
    if boolean_b:
        # Code that runs if boolean_a is False but boolean_b is True
    else:
        # Code that runs if both booleans are False

def calculate_price(rider_age):
    if rider_age < 12:
        price = 0
    else:
        if rider_age < 18:
            price = 20
        else:
            if rider_age < 65:
                price = 30
            else: 
                price = 15
    return price

print(calculate_price(65))

15

if boolean_a:
    # Code that runs if boolean_a is True
elif boolean_b:
    # Code that runs if boolean_a is False but boolean_b is True
else:
    # Code that runs if both booleans are False

def calculate_price(rider_age):
    if rider_age < 12:
        price = 0
    elif rider_age < 18:
        price = 20
    elif rider_age < 65:
        price = 30
    else:
        price = 15
    return price

print(calculate_price(12))

20

def tell_me_about_the_weather(temp, precipitation):
    if temp < 0 and precipitation:
        print("I think it's snowing.")
    if temp < 0 and not precipitation:
        print("At least it's not snowing.")
    if temp < -100 or temp > 100:
        print("I think something is very wrong.")
        
tell_me_about_the_weather(106.2, False)

I think something is very wrong.

<book>
    <author>Ludwig Wittgenstein</author>
    <title>Tractatus logico-philosophicus</title>
    <year>1921</year>
</book>

<book>
    <author>Ludwig Wittgenstein</author>
    <title>Tractatus logico-philosophicus</title>
    <year>1921</year>
    <contents>
        <chapter>
            <title>Inledning</title>
            <section>
                <title>1. Wittgenstein och Tractatus</title>
                <paragraph>
                ...
                </paragraph>
            </section>
        </chapter>
    </contents>
</book>

[
    {
        "id": 10635823179,
        "sampling_rate": null,
        "timestamp": "2022-05-24 15:15:52",
        "location": {
            "id": 16232,
            "latitude": "48.8",
            "longitude": "9.002",
            "altitude": "365.6",
            "country": "DE",
            "exact_location": 0,
            "indoor": 0
        },
        "sensor": {
            "id": 92,
            "pin": "1",
            "sensor_type": {
                "id": 14,
                "name": "SDS011",
                "manufacturer": "Nova Fitness"
            }
        },
        "sensordatavalues": [
            {
                "id": 23601965190,
                "value": "1.44",
                "value_type": "P1"
            },
            {
                "id": 23601965192,
                "value": "0.50",
                "value_type": "P2"
            }
        ]
    },

my_name = "Pikachu"
print(my_name[0])

P

print(my_name[1:3])

ik

print("Mr. " + my_name)

Mr. Pikachu

print(my_name + "Mr. ")

PikachuMr.

candy1 = ["chocolate", "jellybeans", "fudge", "toffee"]
print(candy1[0])

chocolate

print(candy1[1:3])

['jellybeans', 'fudge']

print(["licorice"] + candy1)

['licorice', 'chocolate', 'jellybeans', 'fudge', 'toffee']

print(candy1 + ["licorice"])

['chocolate', 'jellybeans', 'fudge', 'toffee', 'licorice']

spam = "EXEMPEL"

spam

'EXEMPEL'

spam[0]

spam[1]

spam[2:5]

'EMP'

while boolean:
    # Code to repeat

count = 0
while count <= 10:
    print(count)
    count += 1
print("Efter loopen är count: " + str(count))

0
1
2
3
4
5
6
7
8
9
10
Efter loopen är count: 11

# evig loop
x = 0
while x <= 10:
    print("En dator blir aldrig uttråkad.")
    print(x)

count = 0
while count < 10:
    if count == 3 or count == 5:
        count += 1
        continue

    if count > 7:
        print("Nu orkar jag inte mer." + "(count: " + str(count) + ")")
        break
    elif count > 3:
        print("Är vi framme snart?" + "(count: " + str(count) + ")")
    elif count > 4:
        print("Har vi kört vilse?" + "(count: " + str(count) + ")")
    else:
        print("Det här är roligt!" + "(count: " + str(count) + ")")
    count += 1

Det här är roligt!(count: 0)
Det här är roligt!(count: 1)
Det här är roligt!(count: 2)
Är vi framme snart?(count: 4)
Är vi framme snart?(count: 6)
Är vi framme snart?(count: 7)
Nu orkar jag inte mer.(count: 8)

for element in a_sequence:
    # Code to run for every element in a_sequence

names = ["Ada", "Beata", "Cecilia", "Diana"]


for name in names:
    print(name)

Ada
Beata
Cecilia
Diana

word = "fantastic"

for char in word:
    print(char)

f
a
n
t
a
s
t
i
c

word = "fantastic"
new_word = ""

for char in word:
     if char == "a":
         new_word += "å"
     elif char == "s":
         new_word += "l"
     else:
         new_word += char
print(new_word)

fåntåltic

list(range(10))

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

list(range(4,6))

[4, 5]

list(range(10, 101, 10))

[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]

list(range(10, 110, 10))

[10, 20, 30, 40, 50, 60, 70, 80, 90, 100]

list(range(10, 0, -1))

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]

list(range(10, 3, -2))

[10, 8, 6, 4]

# Skriv ut siffrorna 0 till 9 (10 siffror)
for i in range(10):
    print(i)

names = ["Adam", "Bethany", "Chris"]
# Skriv ut elementen i listan names
for i in range(len(names)):
    print(names[i])

names = ["Adam", "Bethany", "Chris"]
# Skriv ut elementen i listan names
for i in range(len(names)):
    print(names[i] + " likes " + names[(i+1) % len(names)])

i = ""
while i != 'q':
    i = input("Skriv något: ")
    p = None
    h = False
    for c in i:
        if p and p == c:
            h = True
        p = c
    if h:
        print("Det du skrev har upprepade bokstäver i sig!")
    else:
        print("Det finns inga upprepade bokstäver där.")
print("Hej då.")

user_input = ""
while user_input != 'q':
    user_input = input("Skriv något: ")
    prev_char = None
    has_repeated = False
    for curr_char in user_input:
        if prev_char and prev_char == curr_char:
            has_repeated = True
        prev_char = curr_char
    if has_repeated:
        print("Det du skrev har upprepade bokstäver i sig!")
    else:
        print("Det finns inga upprepade bokstäver där.")
print("Hej då.")

def has_repeated_char(s):
    prev_char = None
    for curr_char in s:
        if prev_char and prev_char == curr_char:
            return True
        prev_char = curr_char
    return False

user_input = ""
while user_input != 'q':
    user_input = input("Skriv något: ")
    if has_repeated_char(user_input):
        print("Det du skrev har upprepade bokstäver i sig!")
    else:
        print("Det finns inga upprepade bokstäver där.")
print("Hej då.")

def has_repeated_char(s):
    """Returnera True om upprepade tecken finns i s, annars False."""
    prev_char = None
    for curr_char in s:
        # Kolla om föregående tecken är samma som aktuellt tecken.
        if prev_char and prev_char == curr_char:
            return True
        prev_char = curr_char
    return False

# Fråga användaren om ett ord och berätta om det innehåller upprepade tecken
# eller inte.
user_input = ""
while user_input != 'q':
    user_input = input("Skriv något: ")
    if has_repeated_char(user_input):
        print("Det du skrev har upprepade bokstäver i sig!")
    else:
        print("Det finns inga upprepade bokstäver där.")
print("Hej då.")

def ta_emot_kommando():
    satser
    return kommando

def kommando1():
    satser
    
def kommando2():
    satser
    
def utför_kommando(kommando):
    satser
    
def main():
    while True:
        kommando = ta_emot_kommando()
        utför_kommando(kommando)

def ladda_ordlistor():
    satser
def ladda_ordlista(ordlista):
    satser
def autocomplete_strategi1():
    satser
def autocomplete_strategi2():
    satser
def autocomplete(strategi, ord, ordlistor)
    satser
def välj_strategi():
    satser
def main():
    ordlistor = ladda_ordlistor()
    strategi = välj_strategi()
    while True:
        ord = input("Skriv ett ord: ")
        if ord != "q":
            kompletterat_ord = autocomplete(strategi, ord, ordlistor)
            print(kompletterat_ord)

file = open(filnamn)
file = open(filnamn, 'r') # read - endast läsning
file = open(filnamn, 'w') # write - skriva över
file = open(filnamn, 'a') # append - lägga till

file = open("hemligt.txt")
contents = file.readlines()

file = open("data.csv")
contents = file.readlines()
file.close()

print(True)
print("True")
print(repr(True))
print(repr("True"))

729G46 Informationsteknologi och programmering¶

Tema 2, Föreläsning 1-2¶

Johan Falkenjack, johan.falkenjack@liu.se¶