# Ubuntu Linux
sudo apt install -y python3
 
# Mac - open a terminal!

# Windows
py main.py
 
# Mac/Linux
python3 main.py

def add(a, b):
	print("{} + {} = {}".format(a, b, a + b))
 
print("Hello World!")
 
add(2, 6)

# Your first program!
 
print("Hello World!")

# This is a single line comment
# This is another single line comment
 
# print("hello!")
 
 
'''
This
comment
is a
multi-line comment
'''

a = 4
b = 3
 
a + b # 7
 
a - b # 1
 
a * b # 12
a ** b # 64
 
13 / 2 # 6.5
13 // 2 # 6
16 % b # 1
 

# Integer (int)
34
786
345
 
# Float (float)
3.14159
2.5
 
# String (str)
"Hello"
'Python 2 is dead'
"a"
 
 
# Booleans (bool)
True
False
 
True and False
True or False
not True
 
 
# Declaration
my_variable = 42

# Integer (int)
34
786
345
 
# Float (float)
3.14159
2.5
 
# String (str)
"Hello"
'Python 2 is dead'
"a"
 
 
# Booleans (bool)
True
False
 
True and False
True or False
not True

# if <BOOLEAN>:
# 	do something
 
if True:
  pass
 
if x > y:
  print("x is bigger")
elif x < 0:
  print("x and y are negative")
else:
  print("something else")
  

for i in range(10):
  print(i)
  
j = 0
while j < 10:
  print(j)
  j += 1

def do_something():
  print("I did something")
  print("I did another thing!")
 
def do_nothing():
  pass
 
def add(a, b):
  return a + b
 
def add_and_multiply_by_20(blah, bleh):
  x = add(blah, bleh)
  return x * 20
 
 
do_something()
do_nothing()
add(3, 4)
add_and_multiply_by_20(43, 26)

trees = ["Maple", "Birch", "Oak", "Beech"]
 
trees[0] # "Maple"
trees[2] # "Oak"
 
print(trees)
trees.append("Willow")
print(trees)
 
nums = range(1, 10)
 
nums[3] # 4
 
 
 
stuff = ["blah", "blah", 34, 3.14]
 
stuff[1:3]
stuff[:3]
 
print(stuff)
stuff[1] = "bleh"
print(stuff)
 
del stuff[0]
stuff.remove(34) 
 
print(stuff)

fruits = ("orange", "apple", "banana")
 
fruits[1] = "cherry" # This won't work
 
for fruit in fruits:
  print(fruit)
 
o, a, b = fruits
print(a)
  
  
  
my_dict = {
  "brand": "Apple",
  "model": "iPhone",
  "year": 2007
}
 
my_dict["model"] # "iPhone"
 
for key in my_dict:
  print(key, my_dict[key])

# main.py
 
import stuff
 
stuff.say_hello("World")
stuff.say_hello("Everyone")

# stuff.py
 
def say_hello(thing):
  print("Hello", thing)

# main.py (alternative)
 
from stuff import say_hello
# from stuff import * (imports everything)
 
say_hello("World")
say_hello("Everyone")

import random
 
things = ("cherry", "bell", "orange", "pear") # Tuple
 
while True:
    spin = [things[random.randint(0, 3)] for x in range(3)]
    print(spin)
 
    if spin[0] == spin[1] == spin[2]:
        print("You Win!")
    else:
        print("You lose.")
 
    if input("Spin again?"):
        break
	print()

class Person:
  def __init__(self, name):
    self.name = name
    self.age = 0
    
  def birthday(self):
    self.age += 1
      
      
me = Person("Tim")
you = Person("Derek")
 
print(me.name, me.age)
print(you.name, you.age)
 
for i in range(21):
	me.birthday()
 
for i in range(30):
	you.birthday()
    
you.name = "Steve"
 
print(me.name, me.age)
print(you.name, you.age)

class Person:
  def __init__(self, name):
    self.name = name
    self.age = 0
    
  def birthday(self):
    self.age += 1
  
  def __str__(self):
    return "Hi, my name is {}, and I'm {} years old".format(self.name, self.age)
      
      
p1 = Person("Derek")
p2 = Person("Steve")
 
for i in range(11): p1.birthday()
for i in range(37): p2.birthday()
    
print(p1)
print(p2)

class Person:
  def __init__(self, name):
    self.name = name
    self.age = 0
    
  def birthday(self):
    self.age += 1
  
  def __str__(self):
    return "Hi, my name is {}, and I'm {} years old".format(self.name, self.age)
    
    
class Student(Person):
  def __init__(self, name, subject, year):
    super().__init__(name)
    self.degree = subject
    self.graduation = year
        
  def graduate(self, grade):
    print("Congratulations {}! You graduated {} with a {} in {}".format(self.name, self.degree, grade, self.graduation))
  
  
s = Student("Sarah", "Computer Science", 1999)
for i in range(19): s.birthday()
s.graduate("1.1")