Python coding examples. I/O, math, conditionals, loops and functions.

tutorial1.py

# Python Code Examples & Tutorials

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# 1. Basic Input/Output
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message = "Winter is coming!"
print(message)

first_name = "Tyrion"
last_name = "Lannister"
full_name = first_name + " " + last_name
print(full_name)

# this is a comment

# ask user's name
user_name = input("What is your name?")
print("You know nothing " + user_name)


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# 2. Math operations
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x = 2 + 3
y = 2 * 3
z = 3 / 2
print(z)
print(x ** 2)


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# 3. Lists
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dragons = ['Drogon', 'Rhaegal', 'Viserion']
print(dragons)
print(dragons[0])

dragons.pop(1)
print(dragons)

dragons.append('Rhaegal')
print(dragons)

dragons.sort()
print(dragons)

print(len(dragons))


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# 4. Conditionals
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a = 5
b = 7
c = 5
d = 9
e = 5

if a > b:
    print(a)
else:
    print(b)

if a == b:
    print("a equals b")
elif a == c:
    print("a equals c")
elif a == d:
    print("a equals d")
else:
    print("a equals none")

if a == b or a == c or a == d:
    print("a equals something")

if a == c and a == e:
    print('a equals c and e')

if a != b:
    print("a not equal to b")


##########################################
# 5. Loops
##########################################
houses = ['Stark', 'Lannister', 'Targaryen', 'Baratheon', 'Tyrell', 'Tully', 'Martell', 'Greyjoy', 'Arryn']

for house in houses:
    print('House :')
    print(house)
    print("------------")

for house in houses:
    if house == 'Lannister':
        print("A Lannister always pays his debts.")
    elif house == "Stark":
        print("The winters are hard but the Starks will endure. We always have.")
    else:
        print('House ' + house)


##########################################
# 6. Dictionaries
##########################################
daenerys = {
    'Title': 'Lady of Dragonstone, Protector of the Seven Kingdoms, The Unburnt',
    'Origin': 'Free Cities, Dragonstone',
    'Allegiance': 'House Targaryen',
    'Culture': 'Valyrian',
    'Parents': 'Aerys II, Rhaella Targaryen',
    'Spouse': 'Khal Drogo'
}

print(daenerys['Title'])

daenerys['Dragons'] = 2
print(daenerys['Dragons'])

daenerys['Dragons'] = 'Drogon & Rhaegal'
print(daenerys['Dragons'])

daenerys['Dragons'] = ['Drogon', 'Rhaegal']
print(daenerys['Dragons'][0])

for key, value in daenerys.items():
    print(value)


##########################################
# 7. Functions
##########################################
def quotes():
    print("Winter is coming.")
    print("When you play a game of thrones you win or you die.")


quotes()


def multiply_by_2(number):
    print(int(number) * 2)


multiply_by_2(199)

number = input("Give me a number: ")
multiply_by_2(number)


def get_first(list):
    return list[0]


dragons = ['Drogon', 'Rhaegal', 'Viserion']
first_dragon = get_first(dragons)
print(first_dragon)