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Large Update, Dec 9
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‎"if" statements/main.py

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##
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# "If" Statements Lecture
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##
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# -*- coding: utf-8 -*-
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# if condition:
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# Action
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click = False
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Like = 0
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click = True
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if click == True:
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Like = Like + 1
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click = False
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# print(Like)
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Temperature = 20
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Thermo = 15
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# print(Thermo)
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if Temperature <= 15:
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Thermo = Thermo + 5
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# print(Thermo)
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if Temperature >= 20:
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Thermo = Thermo - 3
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# print(Thermo)
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Time = "Day"
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Sleepy = False
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Pajamas = "Unknown"
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InBed = True
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print(Pajamas)
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if Time == "Night" or Sleepy == True:
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Pajamas = "On"
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elif Time == "Morning":
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Pajamas = "On"
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else:
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Pajamas = "Off"
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print(Pajamas)
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##
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# "If" Statements Lecture
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##
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# -*- coding: utf-8 -*-
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'''
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Syntax:
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if condition:
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Action
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'''
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click = False #set variable click to False
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Like = 0 #initialize Like equal to 0
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if click == True: #Check if click is True
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Like = Like + 1 #Increment Like by 1
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click = False #set click to False
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print(Like) #print the value
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Temperature = 20 #set a variable Temperature to 20
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Thermo = 15 #set a variable Thermo to 15
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if Temperature < 15: #Check if Temperature is less than 15
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Thermo = Thermo + 5 #if yes increment variable Thermo by 5
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print(Thermo) #print the value Thermo
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Temperature = 14 #set variable Temperature to 14
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Thermo = 15 #set variable Thermo to 15
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if Temperature < 15: #Check if Temperature is less than 15
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Thermo = Thermo + 5 #if True increment Thermo by 5
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print(Thermo) #print the value of Thermo
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Temperature = 15 #set variable Temperature to 15
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Thermo = 15 #set variable Thermo to 15
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if Temperature <= 15: #Check if Temperature is less than or equal to 15
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Thermo = Thermo + 5 #if True increment Thermo by 5
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print(Thermo) #print the value of Thermo
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if Temperature > 20: #Check if Temperature is greater than 20
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Thermo = Thermo - 3 #if True decrement Thermo by 3
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print(Thermo) #print the value of Thermo
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Temperature = 20 #set the value of Temperature to 20
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Thermo = 15 #set Thermo equals to 15
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if Temperature <= 15: #Check if Temperature is less than or equal to 15
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Thermo = Thermo + 5 #if True increment Thermo by 5
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print(Thermo) #print value of Thermo
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if Temperature >= 20: #Check if Temperature is greater than or equal to 20
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Thermo = Thermo - 3 #if True decrement Thermo by 3
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print(Thermo) #print value of Thermo
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Time = "Day" #set variable Time to Day
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Sleepy = False #set Sleepy equals to False
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Pajamas = "Off" #initialize Pajamas equal to Off
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'''
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If Time equals to Night and Sleep is True then set Pajamas equal to On
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'''
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if Time == "Night" and Sleepy == True: #Check two condition and are ANDed
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Pajamas = "On" #if both condition are True then set Pajamas = On
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print(Pajamas) #print the value of Pajamas
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Pajamas = "Off" #initialize Pajamas equal to Off
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if Time == "Night" or Sleepy == True: #Check two condition and are ORed
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Pajamas = "On" #if anyone of the condition is True set Pajamas equal to On
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print(Pajamas) #print the value of Pajamas
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Time = 'Night' #set variable Time to Night
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Sleepy = 'True' #set variable Sleep equals to True
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Pajamas = "Off" #initialize Pajamas equal to Off
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if Time == "Night" or Sleepy == False: #Check two condition and are ORed
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Pajamas = "On" #if anyone of the condition is True set Pajamas equal to On
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print(Pajamas) #print the value of Pajamas
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'''
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intialize Time equals to Day, Sleepy equals to False, Pajamas to off and InBed equals to True
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Check if Time equals to Night, set Pajamas equals to On, else if Time equals to Morning is True
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set Pajamas equals to On and then print its value
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'''
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Time = 'Day'
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Sleepy = 'False'
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Pajamas = "off"
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InBed = True
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if Time == "Night":
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Pajamas = "On"
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elif Time == "Morning":
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Pajamas = "On"
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print(Pajamas)
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Time = 'Morning' #set Time equals to Morning
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Sleepy = 'False' #Set Sleepy to False
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Pajamas = "Unknown" #set Pajamas to Unknown
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InBed = True #set InBed variable to True
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print(Pajamas) #print value of Pajamas
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if Time == "Night": #if Time is equal to Night
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Pajamas = "On" #set pajamas to On
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elif Time == "Morning": #else if Time equal to Morning
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Pajamas = "On" #set pajamas to On
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else: #otherwise if any of the above two statement are not true
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Pajamas = "Off" #set Pajamas Off
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print(Pajamas) #print the value of Pajamas

‎classes/Introduction-to-Classes.py

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##
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# Introduction to Classes Lecture
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##
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# -*- coding: utf-8 -*-
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"""
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class is defined by a keyword class
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Classname Team in defined
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"""
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class Team:
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def __init__(self): #constructor with no arguments
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self.TeamName = 'Name' #self represents the instance of the class and the variables of a class can be accessed using self
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self.TeamOrigin = 'Origin' #set an attribute 'TeamOrigin to "Origin"
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'''
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DefinieTeamName and DefineTeamOrigin represents the methods of a class. Each method takes one
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arguments
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'''
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def DefineTeamName(self, Name):
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self.TeamName = Name
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def DefineTeamOrigin(self, Origin):
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self.TeamOrigin = Origin
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Team1 = Team() #create an object of a class Team
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'''
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Methods and Member of a class can be accessed using a dot operator.
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object.membername or object.methodname
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'''
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print(Team1.TeamName) #Access the member of a class using dot operator and print the value of a member
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Team1.DefineTeamName("Tigers") #call methods of a class using a dot operator
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print(Team1.TeamName) #print the value of a member TeamName
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print(Team1.TeamOrigin) #print the value of a member TeamOrigin
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Team1.DefineTeamOrigin("Chicago") #call method DefineTeamOrigin of a class Team
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print(Team1.TeamOrigin) #print value of a member TeamOrigin
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'''
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Again Define a class Team
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'''
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class Team:
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#constructor passes two variables Name and Origin. The
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#default value of variable Name is "Name" and that of variable Origin is "Origin".
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#If no values are passed through a constructor its default values are Name and Origin.
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def __init__(self, Name = "Name", Origin = "Origin"): #constructor
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self.TeamName = Name #member assignment
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self.TeamOrigin = Origin #member assignment
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def DefineTeamName(self, Name): #class method
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self.TeamName = Name
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def DefineTeamOrigin(self, Origin): #class method
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self.TeamOrigin = Origin
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Team1 = Team("Tigers", "Chicago") #creating an object of a class Team.
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Team2 = Team("Hawks", "Newyork") #creating an instance of a class Team and passing two values.
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Team3 = Team() #creating an object of a class with no values passed.
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print(Team1.TeamName) #member can be accessed from outside the class using dot operator
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Team1.DefineTeamName("Tigers") #call methods from outside the class
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print(Team1.TeamName) #print the value of member TeamName
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print(Team1.TeamOrigin) #print the value of member TeamOrigin
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Team1.DefineTeamOrigin("Chicago") #call method DefineTeamOrigin
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print(Team1.TeamOrigin) #print the value of member
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print(Team2.TeamName) #print the value of member TeamName of object Team2
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print(Team2.TeamOrigin) #print the value of member TeamOrigin of object Team2
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print(Team3.TeamName) #print the value of member TeamName of object Team3
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print(Team3.TeamOrigin) #print the value of member TeamOrigin of object Team3

‎dictionaries and sets/Dictionaries-and-Sets.py

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##
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# Dictionaries and Sets Lecture
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##
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# -*- coding: utf-8 -*-
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"""
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A set is a data structure in python like a list to store a variety of hetrogenous unique elements.
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Hetrogenous means a set can contain primitive types integer , string , float in it.
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Unique means that each element can occur only once in a set
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"""
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# Declaring a set 'Sets' with different string values in it
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Sets={"Element1","Element2","Element1","Element4"}
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# Printing variable 'Sets' using the 'print' function
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print(Sets)
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# Output
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"""
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{'Element1', 'Element4', 'Element2'}
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"""
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# Notice how the output is different from the input in two ways
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# 1) Only unique elements are printed
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# 2) Elements are not printed in the same order as they were stored because in sets order doesnt matter
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# Here 'if' condition is used along with 'in' keyword to check whether the value "Element1" is present in set 'Sets'
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if "Element1" in Sets:
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# If the value "Element1" is found print "Yes" to console
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print("Yes")
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# Output
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"""
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Yes
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"""
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# Declaring a list variable 'CountryList' and assigning empty list to it by using '[]'
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CountryList = []
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# For loop is used with 'range(5)' indicating the loop will run 5 times from 0-4
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for i in range(5):
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# Taking input from user and assigning it to variable named 'Country' using 'input(range_value)' function
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Country = input("Please Enter Your Country: ")
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# 'append(variable_name)' function is used here which adds a new element into the list 'CountryList'
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CountryList.append(Country)
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# A new set 'CountrySet' is created using the 'set(variable_name)' function by passing the variable 'CountryList' which will convert the 'CountryList' to a set
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CountrySet = set(CountryList)
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# Printing list 'CountryList'
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print(CountryList)
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# Printing set 'CountrySet'
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print(CountrySet)
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# Output
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"""
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Please Enter Your Country: US
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Please Enter Your Country: France
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Please Enter Your Country: India
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Please Enter Your Country: Brazil
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Please Enter Your Country: France
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['US', 'France', 'India', 'Brazil', 'France']
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{'France', 'India', 'Brazil', 'US'}
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"""
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# First the program asks to entry country names 5 times and then the list and set is printed
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# Notice how the set has changed order and only prints unique elements which is the property of set
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# Here 'if' condition is used along with 'in' keyword to check whether the value "Brazil" is present in set 'CountrySet'
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if "Brazil" in CountrySet:
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# If the value "Brazil" is found print "attended" to console
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print("attended")
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# Output
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"""
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attended
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"""
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"""
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A dictionary is another data structure in python that also supports hetrogenous data to be stored inside it.
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Rather than using index like used in list , a dictionary supports key-value structure where the key is used like an index and value is stored besides it like how values are stored in a variable
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A dictionary should also contain unique keys and can contain even lists inside of it.
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"""
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# Declaring a dictonary variable named 'Dictonary' and assigning keys and values to it
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# "Key" , "Key1", "Key2" are the keys
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# "Value" , "Value1" , "Value2" are the corresponding values
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Dictionary={"Key":"Value","Key1":"Value1","Key2":"Value2"}
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# Printing the dictonary variable 'Dictionary'
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print(Dictionary)
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# Output
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"""
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{'Key': 'Value', 'Key1': 'Value1', 'Key2': 'Value2'}
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"""
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# Declaring a list variable 'CountryList' and assigning empty list to it by using '[]'
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CountryList = []
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# For loop is used with 'range(5)' indicating the loop will run 5 times from 0-4
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for i in range(5):
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# Taking input from user and assigning it to variable named 'Country' using 'input(range_value)' function
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Country = input("Please Enter Your Country: ")
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# 'append(variable_name)' function is used here which adds a new element into the list 'CountryList'
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CountryList.append(Country)
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# Declaring a dictionary variable 'CountryDictionary' and assigning empty dictionary to it by using '{}'
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CountryDictionary={}
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# A for loop is used using 'for in syntax' to access the elements of list 'CountryList' and stored it in local variable named 'Country'
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for Country in CountryList:
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# If statement is used in order to check if the country name is present as a key in dictionary 'CountryDictionary'
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if Country in CountryDictionary:
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# upon finding the key the value is accessed using 'DictionaryName[key_name]' synatx and incremented one to it
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CountryDictionary[Country] +=1
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else:
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# if the key is not found then creating a new key with country name and assigning one to it
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# Notice how no error will be produced which was occuring in list when tried to access an element whcih didnt existed
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CountryDictionary[Country] = 1
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# Printing the dictionary variable 'CountryDictionary'
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print(CountryDictionary)
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# Output
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"""
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Please Enter Your Country: US
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Please Enter Your Country: France
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Please Enter Your Country: India
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Please Enter Your Country: Brazil
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Please Enter Your Country: France
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{'France': 2, 'India': 1, 'Brazil': 1,'US': 1}
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"""
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# No order is mainatined in dictionary as well

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