Learn Data Science

https://youtu.be/mr15WQQoTvI

19 OCTOBER 2022

Day 1 Video Session

 

print("hello")
print(5+4)
print('5+5')
print("10+frgjdsijgdskmdklfmdfmv4",5+6," = ",11)
# 4 parameters/arguments
#Comment
price = 50 #variable called price is assgined a value 50
quantity = 23
TotalCost = price * quantity
print(TotalCost)

 

#The total cost of XquantityX pens selling at XpriceX would be XtotalcostX
print(“The total cost of”,quantity,“pens selling at”,price,“would be”,TotalCost)
print(f”The total cost of {quantity} pens selling at {price} would be {TotalCost}”)

#going to use format string

 

Session 2: 20 OCT 2022

VIDEO Recording

var1 = 80
var2 = 60
sdfdwfdsg = "var3"
#Arithematic
s1 = var1 + var2
print(s1, var1 /var2,"Now minus", var1 - var2)
print(var1 - var2)
print(var1 * var2)
print(var1 / var2) #division
print(var1 // var2) #integer division

## Data types: nature of data that we can work
#integer : -inf to +inf without decimal
#float : decimal -5.0
#string: 'hello'
#bool (boolean): True / False
Val1 = True
#input() #take input from the user
print(type(Val1)) #give you the datatype of the variable
price = 50
quantity =23
totalcost = price * quantity
a=50
b=23
c=a*b

VIDEO 3

#arithematic operators:  + - * / //
var1 = 3
var2 = 5
print(var1 ** var2) #power()
print(var1 % var2) #reminder

#Relational operators: will always result in bool output (T/F)
print("var1 < var2: ",var1 < var2) #is var1 less than var2
print(var1 > var2) #is var1 greater than var2
print(var1 == var2)
print(var1 <= var2) #is var1 less than or equal to var2
print(var1 >= var2)
print(var1 != var2) #not equal to

#Logical operators: will have bool input and bool output
# and or not
# F and F = F and T = T and F = FALSE T and T = T
print(True and True)
print(True and False)

#or
# T or T = F or T = T or F = True F or F = False
print("True or True: ",True or True)
print(True or False)

print("Grade A" )
print("Grade B")
print("Grade C")
print("Grade D")
print("Grade E")
print()
avg = 40
if avg>=50:
print("i am inside if")
print()
sum=5+3
print(sum)

print("I am in main")

Session on 21 OCT 2022

subject1 = input("Enter the marks in subject 1: ")
print(type(subject1))
subject1 = int(subject1)
print(type(subject1))
subject2 = 99
subject3 = 100
avg_marks = (subject1+subject2+subject3)/3
print("Average marks scored is ",avg_marks)
if avg_marks >=80:
print("You got grade A")
if avg_marks >=90:
print("You also win President Medal")
elif avg_marks >=70:
print("You got grade B")
elif avg_marks >=60:
print("You got grade C")
elif avg_marks >=50:
print("You got grade D")
else:
print("You didnt get grade E")

print("Thank You")

#Loops - to repeat the steps more than once
#1. For : we use it when we know how many times to execute
#2. While : we dont know how many times but we know condition till when
for i in range(10): #range(10): starts from zero and goes upto 10 (not included 10)
print("Hello")

count = 0
while count<10:
print("Hello in While")
count=count+1
#for loop
for j in range(5):
for i in range(5):
print("*", end=" ")
print()

print()

# \n - newline
#print("A \n B \n C \n D \n E")
#print has invisible \n at the end

print("Hello\n")
print("Good Morning")

26 OCT 2022

#List methods
list1 = [2,4,6,8,10,8,19,8]
list1.append(3) #adds at the end of the list
print(list1)
list1.insert(2,14) #(pos,value)
print(list1)

#remove elements from a list
#pop() - removes element at the given position
list1.pop(1)
#remove() - remove given element
list1.remove(10)
print(list1)

#index()
print("Index: ",list1.index(8))

pos=[]
c=0
for i in list1:
if 8 ==i:
pos.append(c)
c+=1
print("Position of 8 in the list: ",pos)
list1.pop(pos[-1])

list2 = [10,20,30,40]
list3 = list1 + list2
print(list3)
list1.extend(list2) #list1 = list1 + list2
print(list1)
list1.reverse() #just reverse the elements
print(list1)
list1.sort() #increasing order
print(list1)
list1.sort(reverse=True) #decreasing order
print(list1)

#
list1 = [2, 14, 6, 8, 8, 19, 8, 3]
list1[1] = 4 #we can edit is called MUTABLE
print(list1)
list2 = list1 #deep copy: both points to same data
list3 = list1.copy() #shallow copy
print("1. List1: ",list1)
print("1. List2: ",list2)
print("1. List3: ",list3)
list2.append(22)
print("2. List1: ",list1)
print("2. List2: ",list2)
print("2. List3: ",list3)

27 OCT 2022


#linear ordered mutable collection - List
#linear ordered immutable collection - Tuple

t1 = (1,2,3,4,5)
print(type(t1))
print(t1[-1])
#[] brackets are used for indexing in all datatypes and also list
#() - for tuple and also for function
print(t1)
#t1[1] = 10 - TypeError: 'tuple' object does not support item assignment
print(t1.index(3))
print(t1.count(3))
n1,n2,n3 = (2,4,6) #unpacking
print(n2)

for i in t1:
print(i)

#comparing: always compares first element and if they are equal
# it goes to the next and so on
#(2,4) (2,4)
print(type(t1))
t1 = list(t1)
print(type(t1))
t1 = tuple(t1)

#Dictionary
#non-linear unordered mutable collection
d1 = {}
print(type(d1))
d1 = {"fname":"Sachin", "lname":"Tendulkar","Runs": 130000,"City":"Mumbai"}
d1["lname"] = "TENDULKAR"
print(d1["lname"])
#
d1.popitem()
print(d1)
d1.pop("fname") #removes the value with the given key
print(d1)

#keys
print(d1.keys())
for i in d1.keys():
if d1[i] == "TENDULKAR":
print("Remove this key: ",i)

print(d1.values())
for i in d1.items():
print(i[1])

d1 = {"fname":"Sachin", "lname":"Tendulkar","Runs": 130000,"City":"Mumbai"}
d2 = d1
d3 = d1.copy()
print("1. D1 = ",d1)
print("1. D2 = ",d2)
print("1. D3 = ",d3)
d1.update({"Country":"India"})
print("2. D1 = ",d1)
print("2. D2 = ",d2)
print("3. D3 = ",d3)

d3.clear()
print(d2)

#Sets
#linear un-ordered mutable collection - sets
set1 = {1,2,3,3,4,3,4,2,1}
print(type(set1))
print(set1)

s1 = {1,2,3,4,5}
s2 = {3,4,5,6,7}
print(s1|s2) # Union
print(s1 & s2) # Intersection
print(s1 - s2) #diff
print(s2 - s1) #diff
print(s1 ^ s2) #symm diff
print(s1.intersection(s2)) #without update will give a new set
print(s1.update(s2)) #update will update the s1 with new value
print(s1)

28 OCT 2022

#Functions
def mystatements():
print("How are you?")
print("Whats your name?")
print("Where are you going?")

print("Hello")
mystatements()
print("Second")
mystatements()

def myaddition():
n1 = int(input("Enter number 1 to add: "))
n2 = 50
sum = n1 + n2
print("Addition of two numbers is ",sum)

myaddition()
num1,num2,num3 = 15,20,25
def myaddition2(n1,n3,n2): #accepting arguments
#n1 = int(input("Enter number 1 to add: "))
n2 = 50
sum = n1 + n2
print("Addition of two numbers is ",sum)
myaddition2(num1,num2,num3) #num1 is the argument we are passing
## positional & required


##2. positional & default
def myaddition2(n1,n2,n3=0): #accepting arguments
#n1 = int(input("Enter number 1 to add: "))
n2 = 50
sum = n1 + n2
print("Addition of two numbers is ",sum)
myaddition2(num1,num2)

#3.keyword arguments (not positional)
def myaddition2(n1,n2,n3=0): #accepting arguments
#n1 = int(input("Enter number 1 to add: "))
n2 = 50
sum = n1 + n2
print("Addition of two numbers is ",sum)
myaddition2(n3=10,n2=num1,n1=num2)

SESSION 2


#4. Function with takes variable number of arguments
def myownfunction(num1, *numbers, **values):
print("Num 1 is ",num1)
print("Numbers : ",numbers)
print("Values: ", values)
sum=0
for i in numbers:
sum+=i
return sum

def myown2(num1, *numbers, **values):
print("Num 1 is ",num1)
print("Numbers : ",numbers)
print("Values: ", values)
sum=0
for i in numbers:
sum+=i

print("myownfunction: ",myownfunction(3,4,5))
print("MyOwn2: ",myown2(3,4,5))
out = myown2(3,4,5)
print("OUT = ",out)

output = myownfunction("Hello",2,4,6,8,10,12,14,16,18,20, name="Sachin",city="Mumbai",runs=25000)
print("Output is: ",output)

set1= {1,2,3}
set2 = {3,4,5}
print("Union",set1.union(set2)) #return
print("Union Update",set1.update(set2)) #doesnt have return
print("Set1: ",set1)

#
# Class and Objects
#collection of variables and functions (methods) - grouped together to define something
class Dog:
num_legs = 4
def __init__(self,name,make):
self.name = name
self.breed = make

def display(self):
print("Name is ",self.name)
print("Breed is ",self.breed)

mydog1 = Dog("Tiger","BBB") #object 1 of class Dog
mydog2 = Dog("Moti","AAA") #object 2 of class Dog
#mydog2.initialize()
#mydog1.initialize()
print(mydog1.num_legs)
print(mydog2.num_legs)
mydog1.display()
class FourSides:
def __init__(self,a):
self.side1 = a
print('FourSides Object is created')
def _display_4sides(self):
print("Display in 4 Sides")
def area(self):
print("Sorry, I am not complete")
def peri(self):
print("Sorry, I am not complete")

class Square(FourSides):
def __init__(self,a):
FourSides.__init__(self,a)
print('Square Object is created')
def area(self):
print("Area is ",self.side1**2)
class Rectangle(FourSides):
def __init__(self,a, b):
FourSides.__init__(self, a)
self.side2 = b
print('Rectangle Object is created')
def area(self):
print("Area is ",self.side1*self.side2)


sq = Square(10)
print(sq.side1)
rc = Rectangle(5,10)
print(rc.side1)
sq.area()
#string
var1 = "Hello"
var2 = 'Hello'
var1 = '''Hello'''
var1 = """Hello"""
var1 = """How are you
Where are you doing
When will you be back
Take care"""
print(type(var1))
print(var1)
print(var1[0:3])
print(var1[-4:])

for i in var2:
print(i)
for i in range(len(var2)):
print(var2[i])

if "e" in var2:
print("E is in the string")

var3 = "i am fine and am doing good"
find = var3.find("am",5,19)
if find!= -1:
var5 = var3.index("am",5,19)
print(var5)
print(" ".isspace())
print(var3.islower())
print("I Am DoinG Good".istitle())