while True:
    print('You are nice!')
    answer = input('Should I stop saying that? Write yes in that case.')
    if answer == 'yes':
        break
            

i = 0
while i < 100: 
    if i % 2 == 0: # continue with the next repetition if i is divisible by 2
        continue
    print(i,'is an odd number')
            

temp = int(input('What is the temperature?'))
if temp > 20:
    print('Warm and nice!')
elif temp > 0: #if temp <= 20 and temp > 0
    print('Not very cold, but not so warm either.')
            

number = int(input('Enter an integer'))
if number == 0:
    print('You entered the number 0.')
elif number > 0:
    print('You entered a positive number.')
else:
    print('You entered a negative number.')
            

age = int(input('How old are you?'))
if age >= 18:
    print('You are an adult!')
else:
    print('You are not an adult.')
            

float('0.01')  #converts the string '0.01' to 0.01
float(10)  #converts the integer 10 to 10.0
            

number = 10
if number == 10:
    print('The number is equal to 10.') #this will be printed
            

number = int(input('Enter an integer'))
if number == 0:
    print('You entered the number 0.')
elif number > 0:
    print('You entered a positive number.')
else:
    print('You entered a negative number.')
            

answer = input('What is your name?')  #The user's answer is saved in the variable answer
            

int(42)  #converts the string '42' to 42
int(3.94)  #converts the decimal number 3.94 to 3
            

print('Hello World')  #prints "Hello World"
print(1+1) #prints the number 2
print(x)  #prints the content of variable x
            

print('Hello World', end='')  #prints "Hello World" without a new line
            

print('Hello','to','you')  #Prints "Hello to you"
print('Hello','to','you',sep=' | ',end='!')  #prints "Hello | to | you!" without a new line at the end.
            

from random import randint
roll = randint(1,6)  #a random number 1-6
            

round(7.89)  #rounds to 8
round(1.23)  #rounds to 1
            

round(1.23456,2)  #rounds 1.23
round(1.23456,4)  #rounds to 1.2346
            

str(2.71)  #converts the decimal number 2.71 to the string '2.71'
str(10)  #converts the integer 10 to '10'
            

age = 15
print('You are ' + str(age) + ' years old.')
            

n = int(input('How many numbers do you want to print?'))
i = 1
while i <= n:
    print(i)
    i = i + 1
            

a = abs(5) # a = 5
b = abs(-5.2) # b = 5.2
            

my_list = [1,2,3]
my_list.append(4) # now [1,2,3,4]
            

my_list = ["one",2,3.0] # in Python, a list can consist of different types
my_list.append([1,2,3,4]) # now ["one",2,3.0,[1,2,3,4]]
            

def print_hello():
    print('Hello!')
            

def hello_name(name):
    print('Hello ' + name)

hello_name('Tanja') #Prints "Hello Tanja"
hello_name('Emil') #Prints "Hello Emil"
            

def perimeter_rectangle(width, height):
    perimeter = 2*width + 2*height
    return perimeter
            

for i in range(10):  # i goes from 0 to 9
    print(i) # runs ten times
            

for character in 'Pythonlab.dev':
    print(character)
            

for element in [1,3,3,7]:
    print(element)
            

my_list = [1,2,3]
length = len(my_list) # length = 3
            

country = 'Sweden'
length = len(country) # length = 7
            

tuple = ('Sweden', 22472, 'Lund')
length = len(tuple) # length = 3
            

lista = [1,2,3,4]
largest = max(lista) # largest = 4
            

max(a,0) # 0 if a is negative, otherwise a
            

lista = [1,2,3,4]
smallest = min(lista) # smallest = 1
            

min(a,0) # 0 if a is positive, otherwise a
            

lista = [1,2,3]
lista.pop() # now [1,2]
            

lista = [1,2,3]
lista.pop(0) # now [2,3]
            

def square_and_add(x,y):
    return x**2 + y**2

result = square_and_add(5,7)
print('Squaring and adding 5 and 7 gives', result)
            

lista = [1,2,3,4]
sum_val = sum(lista) # sum_val = 10
            

tupel = (1,2,3)
sum_val = sum(tupel) # sum_val = 6