calthoff

authors = []

def collect_authors():
  answer = None
  while answer != "q":
      answer = input("Who is your favorite author?")
      authors.append(answer)
    
print(authors)

calthoff

a = 0

def increment():
    global a
    a += 1

calthoff

def increment(a):
    return a + 1

calthoff

shapes = [tr1, sq1, cr1]
for a_shape in shapes:
    if type(a_shape) == "Triangle":
        a_shape.draw_triangle()
    if type(a_shape) == "Square":
        a_shape.draw_square()
    if type(a_shape) == "Circle":
         a_shape.draw_circle()

calthoff

shapes = [tr1, sw1, cr1]

for a_shape in shapes:
    a_shape.draw()

calthoff

class Shape():
    def __init__(self, w, l):
        self.width = w
        self.len = l

    def print_size(self):
        print("""{} by {}""".format(self.width, self.len))

class Square(Shape):
    pass

calthoff

class Dog():
    def __init__(self, name, breed, owner):
        self.name = name
        self.breed = breed
        self.owner = owner


class Person():
    def __init__(self, name):
        self.name = name

calthoff

class Rectangle():
    def __init__(self, w, l):
        self.width = w
        self.length = l

    def print_size(self):
        print("""{} by {}""".format(self.width, self.length))
        

calthoff

class Rectangle():
    recs = []

    def __init__(self, w, l):
        self.width = w
        self.len = l
        self.recs.append((self.width, self.len))

    def print_size(self):
        print("""{} by {}""".format(self.width, self.len))

calthoff

class Card:
    suits = ["spades", "hearts", "diamonds", "clubs"]
    
    values = [None, None,"2", "3", "4", "5", "6", "7", "8", 
              "9", "10", "Jack", "Queen", "King", "Ace"]

    def __init__(self, v, s):
        """suit + value are ints"""
        self.value = v
        self.suit = s