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Python Practice P2.py
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363 lines (190 loc) · 3.46 KB
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#!/usr/bin/env python
# coding: utf-8
# In[1]:
#booleans
True
# In[2]:
#Booleans
1 == 1
# In[3]:
#Booleans
1 == 2
# In[4]:
#Booleans
1 == 3
# In[5]:
#Booleans
2 == 2
# In[7]:
#Lists
my_list = [1,2,3,4]
print(my_list)
# In[8]:
#Sets
my_set = {1,2,3,4,5}
print(my_set)
# In[9]:
#Sets with len command
len(my_set)
# In[11]:
#Sets with len and print
my_set = {1,1,2,2}
len(my_set)
print(my_set)
# In[12]:
#Lists
[1,2] == [2,1]
# In[13]:
#Sets
{1,2,3} == {3,2,1,1,1}
# In[14]:
#Lists
[1,2] == [1,2]
# In[16]:
#Tuples
my_tuple = (1,2,3)
len(my_tuple)
# In[20]:
#Adding stuff to the list
da_list = ["a", "b", "c", "d"]
da_list.append("e")
print(da_list)
# In[33]:
#Dictionaries part 1
my_dictionary = {
'a': 'apple',
'b': 'brother'
}
my_dictionary['a']
# In[27]:
#Dictionaries part 2
ty_dictionary = {
'apple': 'A red fruit',
'bear': 'A scary animal'
}
ty_dictionary['apple']
# In[35]:
20/6
# In[34]:
#Arithmetic Operators
20 % 6
#FAQ: Why is 20 % 6? 20/6 is 18 with a remainder of 2. This is used for mathematical operations.
# In[36]:
5 > 2
# In[37]:
5 < 2
# In[38]:
1 in [1,2,3,4,5]
# In[39]:
#IF/ELSE statements
a = True
if a:
print('It is true!')
print('Also print this')
else:
print('It is false!')
print('Always print this')
# In[43]:
#IF/ELSE statements part 2
a = True
b = False
c = True
if a:
print('It is true!')
if b:
print('Both are true')
if c:
print('All three are true')
else:
print('It is false!')
# In[48]:
#Functions
def multiplyByThree(val):
return 3 * val
multiplyByThree(2)
# In[51]:
#Function part 2
def multiply(var1, var2):
return var1 * var2
# In[52]:
multiply(2, 2)
# In[53]:
#Classes part 1a
class Dog:
def __init__(self, name):
self.name = name
self.legs = 4
def speak(self):
print(self.name + ' says: Bark!')
# In[55]:
#Classes part 1b
my_dog = Dog('Rover')
another_dog = Dog('Fluffy')
my_dog.speak()
another_dog.speak()
# In[57]:
#Classes part 2a
class Animal:
alive = True
def eat(self):
print("Animal is eating.")
def sleep(self):
print("Animal is sleeping.")
class Rabbit(Animal):
pass
class Fish(Animal):
pass
class Hawk(Animal):
pass
rabbit = Rabbit()
fish = Fish()
hawk = Hawk()
print(rabbit.alive)
fish.eat()
hawk.sleep()
# In[58]:
#Classes part 2b
rabbit.alive()
# In[61]:
# Challenge 2: Returns the value of the factorial of num if it is defined, otherwise, returns None
def factorial(num):
if type(num) is not int:
return None
if num < 0:
return None
if num == 0:
return 1
i = 0
f = 1
while i < num:
i = i + 1
f = f * i
return f
# Returns the value of the factorial of num if it is defined, otherwise, returns None
def factorial(num):
if type(num) is not int:
return None
if num < 0:
return None
if num == 0:
return 1
return num * factorial(num - 1)
# In[64]:
# return 120
factorial(5)
# In[ ]:
# In[65]:
# return 720
factorial(6)
# In[ ]:
# return 1
factorial(0)
# In[ ]:
# return None
factorial('spam spam spam spam spam spam')
# In[66]:
#END OF PART 2 PRACTICE
# In[67]:
#Credit: 'Bro Code' https://www.youtube.com/watch?v=XKHEtdqhLK8&t=13888s&ab_channel=BroCode
# In[ ]:
#Credit: 'LinkedIn Learning Python Essentials training by Ryan Mitchell.'