The document discusses various Python concepts like data types, operators, control flow statements, functions and more. Some key points: 1) It demonstrates different data types in Python like integers, floats and strings. It shows how to get the type of a variable and compares the ids of variables. 2) Control flow statements like if/else, for, while loops are presented. Logical and comparison operators are also covered. 3) Functions for math operations like square root, absolute value are used. User defined functions and recursion are explained. 4) String slicing, formatting and built-in functions like chr, ord are demonstrated. Random password generation using choices from a character set is presented.

1. Lecture 1:- print, id, type, basic data type (integer, float, string)
print('this is first python class') #this is first python class
print("hello student");print("welcome at inception") #hello student #welcome at inception
# This is single line comment
'''
this is multiline comment
welcome at inception.
'''
a=10
print(type(a)) #<class 'int'>
b=12.2
print(type(b)) #<class 'float'>
c='hello'
print(type(c)) #<class 'str'>
d="hello"
print(type(d)) #<class 'str'>
e='''hello
how are you'''
print(type(e)) #<class 'str'> #used for multiline string
f="""hello
how are you"""
print(type(f)) #<class 'str'> #used for multiline string
g=10
print(type(g)) #<class 'int'>
#id of a and e is equal because both refer to same value
#so value are stored at one place rather than multiple place
#same concept are used in facebook for photo storing
print(id(a)) #1522298624
print(id(g)) #1522298624
print(id(b)) #2240465414760
print(id(c)) #2321848675664
print(id(d)) #2321848675664
print(id(e)) #2321848802664
print(id(f)) #2321848802664
n=input("Enter any number")
print(type(n))
#Enter any number11
#<class 'str'>
n=int(input("Enter any number"))
print(type(n))
#Enter any number12

2. #<class 'int'>
n=float(input("Enter any number"))
print(type(n))
#Enter any number2.3
#<class 'float'>
a=10
b=20
print(id(a)==id(b))
#False
c=10
print(id(a)==id(c))
#True

3. Lecture 2:- multi datatype declaration, input, eval, sqrt, fabs, comparison operators,if,else
#this is single line comment
a=b=10
print(a,b)
#10 10
#swap of two number
a,b=10,20
a,b=b,a
print("a:",a,"b:",b)
#a: 20 b: 10
#swap of two number
a=eval(input("enter first number"))
b=eval(input("enter first number"))
x,y=a,b
a,b=b,a
print("value of", x, "and", y, "after swap",a,b)
#enter first number10
#enter first number20
#value of 10 and 20 after swap 20 10
#temperature in Celsius and Fahrenheit
c=eval(input("enter temperature in Celsius"))
f=((9/5)*c)+32
print("temperature in Celsius", c,"is",f,"in Fahrenheit")
#enter temperature in celcius37
#temperature in Celsius 37 is 98.60000000000001 in Fahrenheit
c=(f-32)*(5/9)
print("temperature in fahernite",f,"is",c, "in celcius")
#temperature in fahernite 98.60000000000001 is 37.00000000000001 in celcius
print(9/5) #1.8
print(9//5) #1
import math
a=math.sqrt(4)
print(a) #2.0
from math import sqrt
a=sqrt(4)
print(a) #2.0
#find hypotenuse of triangle
b=eval(input("enter base of triangle"))
h=eval(input("enter height of triangle"))
import math

4. hy=math.sqrt(h*h+b*b)
print("hypotenuse of triangle with height",h,"and base",b,"is",hy)
#enter base of triangle3
#enter height of triangle4
#hypotenuse of triangle with height 4 and base 3 is 5.0
#find hypotenuse of triangle
from math import sqrt
hy=sqrt(h*h+b*b)
print("hypotenuse of triangle with height", h, "and base",b,"is",hy)
#hypotenuse of triangle with height 4 and base 3 is 5.0
from math import fabs
a=fabs(-4)
print(a) #4.0
#comparison operators
a=eval(input("enter first number:"))
b=eval(input("enter second number:"))
if(a<b):
print("a=",a,"is less than b=",b)
if(a>b):
print("b=",b," is less than a=",a)
if(a==b):
print("b=",b," is equal to a=",a)
if(a<=b):
print("b=",b," is less or equal to a=",a)
if(a>=b):
print("b=",b," is greater than or equal to a=",a)
if(a!=b):
print("b=",b," is not equal to a=",a)
#b= 10 is less than a= 50
#b= 10 is greater than or equal to a= 50
#b= 10 is not equal to a= 50

5. Lecture 3: String, id, while, end
print('He said,"Ram is honest"')
#He said,"Ram is honest"
#string
s='hello'
print(s,type(s)) #hello <class 'str'>
s1="hello"
print(s1,type(s1)) #hello <class 'str'>
s2='''hello'''
print(s2,type(s2)) #hello <class 'str'>
s3="""hello"""
print(s3,type(s3)) #hello <class 'str'>
s="hello inception"
print(s[3:5]) #lo
print(s[6:15]) #inception
print(s[-1:]) #n
s="Hello Inception"
#slicing of string
s="Hello Inception"
print(s[6:-1])
#'Inceptio'
print(s[-1:-10])
#'' print nothing
print(s[-1:-9])
#'' print nothing
print(s[-9:-1])
#'Inceptio'
print(s[14:0])
#'' print nothing
#while loop
i=1
while(i<=10):
print(i,end=" ") #print value in one line
i=i+1
else:
print("bye")
#perfect square
from math import sqrt
a=eval(input("enter any number"))
b=sqrt(a)
if(a==b*b):

6. print(a,"is a perfect square")
else:
print(a,"is not perfect square")
#enter any number25
#25 is a perfect square

7. Lecture 4: for loop, and, or
for i in range(0,5):
print(i, end=" ")
#0 1 2 3 4
for i in range(0,10,2):
print(i,end=" ")
#0 2 4 6 8
for i in range(10,0,-2):
print("n",i,end=",")
#10,8,6,4,2
a=10
b=20
c=10
if(a!=c) or (b<a):
print('hi')
else:
print("hello")
#hello
#largest of three number
a=eval(input("enter first no."))
b=eval(input("enter second no."))
c=eval(input("enter third no."))
if(a>b) and (a>c):
print(a,"is largest")
else:
if(b>a) and (b>c):
print(b,"is largest")
else:
print("c is largest")
#leap year
y=eval(input("Enter year"))
if (y%4==0):
if(y%100==0):
if(y%400==0):
print("leap year")
else:
print("not leap year")
else:
print("leap year")
else:
print("not leap year")

8. #check number power of 3
n=eval(input("enter number"))
while(n%3==0):
n=n/3
if(n==1):
print("power of 3")
else:
print("not power of 3")

9. Lecture 5: for loop break, continue and pass
# check if an integer is power of another integer
n1=eval(input("Enter integer"))
n2=eval(input("ckeck for integer"))
while(n1%n2==0):
n1=n1/n2
if(n1==1):
print("power of ",n2)
else:
print("not power of ",n2)
#break demonstration
for i in range(14):
if(i==5):
break
print(i)
print("good bye")
#continue demonstration
for i in range(14):
if(i==5):
continue
print(i)
print("good bye")
#pass demonstration
for letter in 'python':
if (letter=='h'):
pass
print("this is pass")
print("current letter",letter)
print("bye")
hggggggg
#sum of N number
n=eval(input("Enter no."))
sum=0
for i in range(0,n+1):
sum=sum+i
#print(sum)
print("Sum is:",sum)
#Enter no.10
#Sum is:55
#sum of evenand odd number up to N
n=eval(input("Enter the numbers"))
even=0

10. odd=0
for i in range(0,n+1):
if(i%2==0):
even=even+i
else:
odd=odd+i
print("Sum of even numbers",even)
print("sum of odd numbers",odd)
#Enter the numbers34
#Sum of even numbers 306
#sum of odd numbers 289
#user defined function
def hello():
print("hello") #hello
hello()
#typical question
#add the digits of a positive integer repeatedly until the result has a single digit
def addsum(n):
s=0
while(n>0 or s>9):
if(n==0):
n=s
#print(n)
s=0
s=s+n%10
n=n//10
return s
n=eval(input("Enter any number:"))
print("sum in single digits ",addsum(n))
#Enter any number:65
#sum in single digits 2

11. Lecture 6: for loop, break, continue, recursion, chr and ord
#find factorial of number with recursion
def factorial(n):
if(n==1):
return 1
else:
return (n*factorial(n-1))
n=eval(input("Enter number:"))
if(n<0):
print("not valid")
elif(n==0 or n==1):
print("Factorial of",n,"is",1)
else:
print("Factorial of ",n,"is",factorial(n))
#Enter number:12
#Factorial of 12 is 479001600
#find factorial of number without recursion
n=eval(input("Enter number"))
if(n<0):
print("not valid")
elif(n==0 or n==1):
print("Factorial of",n,"is",1)
else:
f=1
while(n>1):
f=f*n
n=n-1
print("Factorial is",f)
#Enter number:12
#Factorial of 12 is 479001600
#chr and ord function
print(chr(97))
#'a'
print(ord('a'))
#97
#generate random password
c=''
for i in range(33, 128):
c=c+chr(i)
#print(c)
from random import choice
n=eval(input("Enter length of password"))

12. p=eval(input("Enter no. of passwords"))
print("Generated password is:")
for i in range(p):
password=''
for i in range(n):
password+=choice(c)
print(password)
#Enter length of password12
#Enter no. of passwords3
#Generated password is:
#b[&b_(2(9FMY
#=$4V29wn(A%$
#oLI3`J:lnQBf