Digitalfirm Nov 2022
Day 1:
Installation:
Python: https://learn.swapnil.pw/python/pythoninstallation
Pycharm: https://learn.swapnil.pw/python/pythonides
R & RStudio: https://swapnil.pw/uncategorized/installating-r-studio
https://www.mckinsey.com/featured-insights
print("terterterg feererg eryey erytey eytytyt",end='\n')
print(10+5);print("10+5+3+1");print(10+5+3+1)
print("10+5+3+1 =",10+5+3+1, "and 5 + 4 + 95 =", 5+4+95);
# \n is used to move the content to new line
print('Hello',end='. ')
print("How are you",end='. ')
print("Thank you",end='\n') #I am printing thank you here
'this is a sample content print("Thank you")'
'''
multiline
text
'''
print(''' this is a sample text''')
print("\n is use for newline") #printing text is 2 different lines
print("\\n is use for newline") # \\ will be read as \
########################################
num1 = 18+4+2+10
print(num1)
print(num1)
print(num1)
print(num1)
quantity = 13
cost = 19
total = quantity * cost
print(total)
#output: The cost of each pen $19 so the total cost of 17 pens will be $323
print("The cost of each pen $",cost,"so the total cost of",quantity,"pens will be $",total)
#using f string - use variables within strings - variable should be in {}
print(f"The cost of each pen ${cost} so the total cost of {quantity} pens will be ${total}")
# basic variables
#integer
#float
#string
#bool
#complex
#data types
a = 50 #int - numbers without decimal
print("a = 50 => ", type(a))
a = 50.0 #float - numbers decimal
print("a = 50.0 => ", type(a))
a = "50" #str - text
print("a = '50' => ", type(a))
a = True # or False - 2 values , bool
print("a = True => ", type(a))
a = 5j #j is square root of -1
print("a = 5j => ", type(a))
print(a*a)
#Operators
print("Arithematic operations")
a=5
b=8
print(a+b)
print(a-b)
print(a*b)
print(b/a) #float as output
print(a**b) #** power/exponential
print(a//b) #integer division
print(b//a) #integer division
print(a%b) # 5
print(b%a)
print("Conditional Operators")
#input as integer/float - output will be bool
a=8 #assignment, assigning the value 5 to a
b=8
print(a>b) #is a greater than b
print(a<b)
print(a>=b)
print(a<=b)
print(a==b) # == asking a question
print(a!=b) #is a not equal to b
#Logical operators: I/P: Bool and O/P: Bool
# P1: Sachin and Dravid will open the batting
# P2: Sachin or Dravid will open the batting
# A: Sachin and Sehwag opened the batting -
#AND - even one condition is FALSE - entire thing would be False
#OR - even one condition is TRUE - entire thing would be TRUE
a = 10
b = 20
print("a>b or b>a and b!=a: ",not(a>b or b>a and b!=a))
print("not b==a: ",not b==a)
# TRUE
#membership: in
l1 = [3,4,5,6,7]
print(l1)
print(type(l1))
print(5 not in l1)
#convert into different number systems
a= 10 #integer - decimal number system
print(bin(a))
b=0b10
print("b = ",int(b))
#hex for hexadecimal (0x5050) and oct for octal (0o) - number systems
print(oct(b))
print(hex(b))
###### example 1
marks1 = 89
marks2 = 90
marks3 = 56
marks4 = 67
marks5 = 78
sum = marks1 + marks2+marks3 + marks4 + marks5
avg = sum/5
print(f"Total marks obtained in 5 subjects is {sum} and average is {avg} %")
###### example 2
marks1 = input("Enter marks in Subject 1: ")
marks1 = int(marks1)
marks2 = int(input("Enter marks in Subject 2: "))
marks3 = 56
marks4 = 67
marks5 = 78
sum = marks1 + marks2+marks3 + marks4 + marks5
avg = sum/5
print(f"Total marks obtained in 5 subjects is {sum} and average is {avg} %")
# Conditional statements
if avg>=50:
print("You have passed")
print("In IF")
print("Hello")
print("hi")
else:
print("You have failed")
print("Thank you")
#
##Assignment 1: Input a number from the user and Check if the number is positive or not
##Assignment 2: Input number of sides from the user and check if its triangle or not
n=4 #s2 = 0 s1 =5
if n<3:
print("Invalid Shape")
elif n==3:
print("Its a triangle")
elif n==4:
s1 = int(input("Enter length: "))
s2 = int(input("Enter breadth: "))
if s1==s2:
print("Its a square")
if s1==0:
print("Area is not possible")
else:
print("Area is: ",s1*s2)
else:
print("Its a rectangle")
if s1==0:
print("Area is not possible")
else:
if s2==0:
print("Area is not possible")
else:
print("Area is: ",s1*s2)
elif n==5:
print("Its a pentagon")
s1 = int(input("Enter length: "))
s2 = int(input("Enter breadth: "))
if s1 == s2:
print("Its a square")
if s1 == 0:
print("Area is not possible")
else:
print("Area is: ", s1 * s2)
else:
print("Its a rectangle")
if s1 == 0 or s2==0:
print("Area is not possible")
else:
print("Area is: ", s1 * s2)
elif n==6:
print("Its a hexagon")
s1 = int(input("Enter length: "))
s2 = int(input("Enter breadth: "))
if s1 == s2:
print("Its a square")
if s1 == 0:
print("Area is not possible")
else:
print("Area is: ", s1 * s2)
else:
print("Its a rectangle")
if s1 == 0:
print("Area is not possible")
elif s2==0:
print("Area is not possible")
else:
print("Area is: ", s1 * s2)
elif n==7:
print("Its a heptagon")
elif n==8:
print("Its an octagon")
else:
print("Its a complex shape")
#Assignment: Program to find sum and avg of 5 marks
# and assign grade on the basis on:
# avg > 90: A
#avg >75: B
#avg >60: C
#avg >50: D
#avg >40: E
#avg<40: F
#Loops- repeat given block of code
#For loop - exactly how many times to repeat
for i in range(1,10,2): #range(start - included,end-excluded,increment): 1,3,5,7,9
print(i,":Hello")
for i in range(3, 6): # range(start - included,end-excluded,increment=1): 3,4,5
print(i, ":Hello")
for i in range(3): # range(start=0,end-excluded,increment=1): 0,1,2
print(i, ":Hello")
sum=0
for i in range(5):
marks = int(input("Enter marks: "))
sum+=marks
avg = sum/5
for i in range(5):
print("*",end=" ")
print()
'''
* * * * *
* * * * *
* * * * *
* * * * *
* * * * *
'''
for j in range(5):
for i in range(5):
print("*",end=" ")
print()
print("------------------\n")
'''
* * * * *
* * * *
* * *
* *
*
'''
for j in range(5):
for i in range(5-j):
print("*",end=" ")
print()
print("------------------\n")
'''
*
* *
* * *
* * * *
* * * * *
'''
for j in range(5):
for i in range(1+j):
print("*",end=" ")
print()
print("------------------\n")
'''
*
* *
* * *
* * * *
* * * * *
'''
#While
i=0
while i<5:
print("Hello")
i+=1
#adding 2 numbers till user says yes
ch='y'
while ch=='y':
a=30
b=50
print("Sum is 80")
ch=input("type y to continue, anyother key to stop: ")
#rewriting same program using While True
while True:
a = 30
b = 50
print("Sum is 80")
ch = input("type y to continue, anyother key to stop: ")
if ch!='y':
break
#lets write a program to print addition of 2 numbers only when they are even
#otherwise ignore, continue till user wants
while True:
n1 = int(input("Enter first number: "))
if n1%2==1:
continue #continue will take you the beginning of the loop
n2 = int(input("Enter second number: "))
if n2 % 2 == 1:
continue
sum = n1 + n2
print("Sum is ",sum)
ch=input("Hit enter to continue, anyother key to stop: ")
if len(ch)!=0:
break #break will throw you out of the loop
Assignments
1.
#
Assignment 1: Modify the Total Avg marks calculation program to do it for 5
students
# Assignment 2: Modify your Voting program (eligible to vote or not) to a
repeat it for multiple input until
# user wants to continue
- Write a Python program that computes the
factorial of an integer.
- Program to find sum N natural numbers
- Write code to display and count the factors
of a number
- Program to check if eligible to vote in
India
- Enter marks of 3 subjects for 5 students
and grade them. Check for data validity and use BREAK and CONTINUE where
necessary
- Check the type of a Triangle: Isosceles,
Equilateral, Scalene, Right Angle
- Input 3 numbers and re-arrange them in
ascending order. Use BOOLEAN
#STRINGS
name1 = "Sachin"
#first character
print(name1[0]) #0 is for first character
print(name1[2]) #3rd character
size = len(name1)
print(name1[size-1]) #last character
print(name1[-1]) #last character
print(name1[1:4]) #2,3,4 th characters
print(name1[:3]) #no val on left of : means its zero
print(name1[3:6]) #last 3 characters
print(name1[size-3:size]) #last 3 characters
print(name1[-6:-3]) #first 3 characters
print(name1[-size:3-size]) #first 3 characters
print(name1[-3:]) #last 3 char - no val on right of :mean go till last
print("For loop")
for i in name1:
print(i)
for i in range(len(name1)):
print(f"the chracter at the index {i} is {name1[i]}")
for i in enumerate(name1):
print(i)
for i,j in enumerate(name1):
print(f"the chracter at the index {i} is {j}")
print("S" in name1)
name2 = "Tendulkar"
print(name1 + " " + name2)
print((name1 +" ")* 4)
#STRINGS
name1 = "Sachin"
#first character
print(name1[0]) #0 is for first character
print(name1[2]) #3rd character
size = len(name1)
print(name1[size-1]) #last character
print(name1[-1]) #last character
print(name1[1:4]) #2,3,4 th characters
print(name1[:3]) #no val on left of : means its zero
print(name1[3:6]) #last 3 characters
print(name1[size-3:size]) #last 3 characters
print(name1[-6:-3]) #first 3 characters
print(name1[-size:3-size]) #first 3 characters
print(name1[-3:]) #last 3 char - no val on right of :mean go till last
print("For loop")
for i in name1:
print(i)
for i in range(len(name1)):
print(f"the chracter at the index {i} is {name1[i]}")
for i in enumerate(name1):
print(i)
for i,j in enumerate(name1):
print(f"the chracter at the index {i} is {j}")
print("S" in name1)
name2 = "Tendulkar"
print(name1 + " " + name2)
print((name1 +" ")* 4)
# String methods
val1 = "Sachin 10Dulkar"
print(val1.isalnum())
print(val1.islower())
print(val1.istitle())
val2 = "12345"
print(val2.isdigit())
#lower upper title
print("Second set of functions")
val3 = "how ARE you doiNG todaY?"
print(val3.upper())
print(val3.lower())
print(val3.title())
#find
txt_to_search = "Are"
val4 = val3.lower()
print(val4.find(txt_to_search.lower()))
print(val3.replace("ARE","is"))
val3 = val3.lower().replace("are","is")
print(val3)
#split and join
val3 = "how ARE you are doiNG todaY?"
print(val3.split())
val4 = "HOW|ARE|YOU|DOING|TODAY"
print(val4.replace("|"," "))
val4_list = val4.split("|")
val6_str = " ".join(val4_list)
print(val6_str)
val7 = " how ARE you doiNG todaY? "
val7_strip = val7.strip()
print(val7_strip)
val_cnt = val3.lower().count("area")
print(val_cnt)
# LIST
str1 = "Hello"
print(str1[1])
# str1[1] = "Y" #this is not possible
# strings are called as immutable data types
list1 = [50, 4, 5.5, "Hello", True]
print(type(list1))
print(len(list1))
print(list1[3][2])
print(type(list1[3]))
for i in list1:
print(i)
for i in range(len(list1)):
print(list1[i])
l1 = [1, 2, 3, 4]
l2 = [10, 20, 30]
l3 = l1 + l2
print("Adding two list: ", l3)
print("Multiply: ", l2 * 3)
print(30 not in l2)
print(l2[2])
l2[2] = "Thank You" # lists are mutable
print(l2[2])
sum = 0
marks = []
for i in range(0):
m1 = int(input("Enter marks: "))
sum += m1
marks.append(m1)
print("Total marks", sum)
# append will add at the end
# insert - pos and value: value is added at the given pos
marks.insert(2, 11) # [11
marks.insert(2, 22) # [11,22]
marks.insert(2, 33) # [11,22,33]
marks.insert(2, 44) # [11,22,44,33]
marks.insert(2, 55) # [11,22,55,44,33]
marks.insert(2, 66) # [11,22,66,55,44,33]
marks.insert(2, 77) # [11,22,77,66,55,44,33]
# marks[7] = 100 - error since index 7 isnt there
print("Marks obtained are: ", marks)
# pop - removes from the given position
# remove - removes given value
val_remove = 77
if val_remove in marks:
marks.remove(val_remove)
else:
print("Value is not present in the list")
print("Marks obtained are: ", marks)
pos_remove = 2
if pos_remove < len(marks):
marks.pop(pos_remove)
else:
print("List doesnt have that index")
print("Marks obtained are: ", marks)
marks.clear()
print("Marks obtained are: ", marks)
Assignment
Assignments
1. Write a Python program to sum all the items in a
list.
2. Write a Python program to multiplies all the items
in a list.
3. Write a Python program to get the largest number
from a list.
4. Write a Python program to get the smallest number
from a list.
5. Write a Python program to count the number of
strings where the string length is 2 or more and the first and last character
are same from a given list of strings.
Sample List : [‘abc’, ‘xyz’,
‘aba’, ‘1221’]
Expected Result : 2
6. Write a Python program to get a list, sorted in
increasing order by the last element in each tuple from a given list of
non-empty tuples.
Sample List : [(2, 5), (1,
2), (4, 4), (2, 3), (2, 1)]
Expected Result : [(2, 1),
(1, 2), (2, 3), (4, 4), (2, 5)]
7. Write a Python program to remove duplicates from a
list.
8. Write a Python program to check a list is empty or
not.
9. Write a Python program to clone or copy a list.
10. Write a Python program to find the list of words
that are longer than n from a given list of words.
11. Write a Python function that takes two lists and
returns True if they have at least one common member.
12. Write a Python program to print a specified list
after removing the 0th, 4th and 5th elements.
Sample List : [‘Red’,
‘Green’, ‘White’, ‘Black’, ‘Pink’, ‘Yellow’]
Expected Output : [‘Green’,
‘White’, ‘Black’]
13. Write a Python program to generate a 3*4*6 3D
array whose each element is *.
14. Write a Python program to print the numbers of a
specified list after removing even numbers from it.
15. Write a Python program to shuffle and print a
specified list.
16. Write a Python program to generate and print a
list of first and last 5 elements where the values are square of numbers between
1 and 30 (both included).
17. Write a Python program to generate and print a
list except for the first 5 elements, where the values are square of numbers
between 1 and 30 (both included).
18. Write a Python program to generate all
permutations of a list in Python.
19. Write a Python program to get the difference
between the two lists.
20. Write a Python program access the index of a list.
DAY 8
def myreverse(a):
print("A = ", a)
a.reverse()
return a[0]
list1 = [50, 4, 5.5, "Hello", True]
list2 = [90, 20, 50, 40, 30, 70]
list2.reverse()
# print(list2)
print("Myreverse: ", myreverse(list2))
print(list2.reverse())
list2.sort()
# print(list2)
list1.extend(list2)
print("New set: ", list1)
a = "5"
# print(int(a))
print("Learning COPY")
list2 = [90, 20, 50, 40, 30, 70]
list3 = list2 # shallow copy
list4 = list2.copy() # deep copy
print("list2: ", list2)
print("list3: ", list3)
print("list4: ", list4)
list2.append(10)
print("list2: ", list2)
print("list3: ", list3)
print("list4: ", list4)
print("Stack Implementation")
list_master = []
while True:
print("1. Add to the stack")
print("2. Remove from the stack")
print("3. Clear the stack")
print("4. Quit")
op = int(input("Enter your option"))
if op == 1:
val = int(input("Enter the element to add: "))
list_master.append(val)
print("After adding list: ", list_master)
elif op == 2:
if len(list_master) > 0:
list_master.pop(-1)
print("After adding list: ", list_master)
else:
print("List is empty!")
elif op == 3:
list_master.clear()
print("After adding list: ", list_master)
elif op == 4:
print("Thank you for using the program.")
break
else:
print("Invalid option, Try again!")
############### LIST #######################
# TUPLE
t2 = ()
t3=(55,)
t1 = (5, 4, 6, 8, 4)
print(type(t1))
t1 = list(t1)
print(t1.count(8))
# Dictionary
# list: linear ordered mutable collection
# tuple: linear ordered immutable collection
# dictionary: non-linear ordered mutable collection (unordered untill 3.7)
# dictionary is made up of key & value
dict1 = {} # empty dictionary
print(type(dict1))
dict1 = {"Name": "Sachin", "City": "Mumbai", "Runs": 12900, "IsPlaying": False}
print(dict1)
print(dict1["City"])
print(dict1.get("City"))
val = "India"
key = "Country"
t_dict = {key: val}
dict1.update(t_dict)
print("Dictionary after Update: \n", dict1)
print("Size of dictionary: ", len(dict1))
print("keys:", dict1.keys())
for i in dict1.keys():
print(i)
for i in dict1.values():
print(i)
for i in dict1.keys():
print(dict1[i])
for i, j in dict1.items():
print(i)
if "City" in dict1: # default it checks in keys
print("We have City")
if "Mumbai" in dict1.values():
print("We have City Mumbai")
else:
print("Mumbai is not there")
print("Dict1: ", dict1)
dict1.pop("City") # key as input
print("Dict1: ", dict1)
dict1.popitem() # key as input
print("Dict1: ", dict1)
print(type(dict1.values()))
dict1.pop(list(dict1.keys())[list(dict1.values()).index("Sachin")])
# print()
print("Dict1: ", dict1)
#Set - also mutable
set1 = {"New York"}
print(type(set1))
set1.add("Chicago")
#update
#union
s1 = {1,3,5,7,2,4}
s2 = {2,4,6,8}
print("Union: ",s1.union(s2))
print("Union: ",s1 | s2)
#s1.update(s2)
#print("Union Update: ",s1)
#difference
print("difference :",s1-s2)
print("difference :",s2-s1)
print("Difference: ",s1.difference(s2))
#s1.difference_update(s2)
#print("Difference update: ",s1)
print("Symmetric Difference: ", s1 ^ s2)
#intersection
print("intersection :",s1.intersection(s2))
print("intersection: ",s1 & s2)
print("intersection update: ",s1.intersection_update(s2))
print(s1)
s1.intersection_update(s2)
print("intersection update: ",s1)
print(set1)
l1 = [5,10,10,15,15,15,20,20,25]
l1 = list(set(l1))
print(l1)
### Functions
def myfunc1(name): #which takes ONE input argument and doesnt return anything
print("Hello ",name)
print("How are you?")
print("Where are you going?")
def myfunc2(name): #which takes ONE input argument and doesnt return anything
print("Hello ",name)
print("How are you?")
print("Where are you going?")
return "Thank You", "Bye"
def myfunc(): #this is an example which doesnt take any input argument and doesnt return
print("Hello")
print("How are you?")
print("Where are you going?")
myfunc()
print("second time: ")
myfunc1("Kapil") #1 required positional argument: 'name'
print(myfunc2("Sachin"))
#functions
#required positional arguments
## Function definition
def calculate(a,b):
print("Value of a is ",a)
print("Value of b is ",b)
sum = a+b
diff = a-b
mul = a*b
div = a/b
return sum,diff,mul,div
## Function definition - Default argument
def calculate1(a,b=50):
print("Value of a is ",a)
print("Value of b is ",b)
sum = a+b
diff = a-b
mul = a*b
div = a/b
return sum,diff,mul,div
result = calculate(30,20)
print("Addition of given 2 values is ", result[0])
result = calculate1(30,5)
print("Addition of given 2 values is ", result[0])
result = calculate1(30)
print("Addition of given 2 values is ", result[0])
#non positional
result = calculate1(b=30,a=5) #nonpositional => Keyword arguments
print("Addition of given 2 values is ", result[0])
#variable name arguments
def mycalculation(a,c,*b,**d): # * takes multiple values
print("A = ",a)
print("B = ", b)
print("C = ", c)
print("D = ", d)
mycalculation(5,6,7,8,9,10,11,name="Sachin", runs=5000)
def check_prime(a):
result1 = True
for i in range(2,a//2):
if a%i == 0:
result1 = False
break
return result1
result = check_prime(1100)
if result:
print("Its a prime number")
else:
print("Its not a prime number")
#generate prime numbers between 500 and 1000
prime_num = []
for i in range(500,1001):
if check_prime(i):
prime_num.append(i)
print("Prime numbers are: ",prime_num)
#Recursive function
def myfunc(number):
if number <1:
return 0
print(number)
myfunc(number-1)
def factorial(n):
if n<1:
return 1
return n * factorial(n-1)
if __name__ =="__main__":
myfunc(100)
# 5! = 5 * 4 * 3 * 2 * 1!
fact = factorial(5)
print("Factorial is ",fact)
class Person:
population = 0
def welcome(self,name):
self.name = name
print("Welcome to the world")
Person.population+=1
def display(self):
print("Welcome to ",self.name)
print("Total Population: ",Person.population)
p1 = Person()
p1.welcome("Sachin")
p3 = Person()
p3.welcome("Laxman")
p2 = Person()
p4 = Person()
p5 = Person()
p2.welcome("Rekha")
p4.welcome("Geeta")
p5.welcome("Rohit")
p3.display()
p4.display()
class Person():
def __method1(self):
print("Method 1")
def _method2(self):
print("Method 2")
def method3(self):
print("Method 3")
self.__method1()
class Student(Person):
def read(self):
print("I am studying")
p1 = Person()
#p1.__method1() - private members cant be called
p1.method3()
p1._method2()
s1 = Student()
s1.read()
s1.method3()
# public
#protected _ :practically its like public, but theoritically it cant be accessed outside the class
#private __ : members can not be used outside the class
19 DEC 2022
#Class
str1="555"
print(type(str1))
str2 = "Good day"
print(str1.upper())
class Apple:
loc = "World"
def getvalue(self,name):
self.name = name
def display(self):
print(f"I am {self.name}")
@classmethod
def setaddress(cls):
cls.loc = "Universe"
@classmethod
def address(cls):
print(f"Location: {cls.loc}")
a1=Apple()
a1.getvalue("Sachin")
a2=Apple()
a2.getvalue("Kapil")
a3=Apple()
a3.getvalue("Laxman")
a4=Apple()
print(type(a1))
a1.display()
a1.setaddress()
a2.address()
class MySum:
def getval(self):
self.num1 = int(input("Enter value 1: "))
self.num2 = int(input("Enter value 2: "))
def printsum(self):
self.sum = self.num1 + self.num2
print("Sum of the values: ",self.sum)
m1 = MySum()
m1.getval()
m1.printsum()
class Employee:
population = 0
def __init__(self,name,age, salary):
self.name = name
self.age = age
self.__salary = salary
Employee.population +=1
def edit_details(self,name,age,salary):
self.name = name
self.age = age
self.__salary = salary
def _getsalary(self):
return self.__salary
@classmethod
def display_pop(cls):
print("Total Count of Objects = ",cls.population)
p1 = Employee("Sachin",48,1500) # this is calling __init__()
p2 = Employee("Virat", 29,1400)
p3 = Employee("Rohit", 29,1300)
#print(p1.__salary)
p1.display_pop()
print(p1._getsalary())
#print(p2.getsalary())
#print(p3.getsalary())
'''
Encapsulation:
access modifiers:
3 types: Public (variablename), Private (__variablename) -only to class, Protected (_variablename)
'''
word = "hello"
guess = "ll"
ind = 0
word1 = word.replace("l","L",1)
print(word1)
for i in range(word.count(guess)):
ind = word.find(guess,ind)
print(ind)
ind=ind+1
word3 = "How are you doing"
l1 = word3.split("o")
print(l1)
word4 = "o".join(l1)
print(word4)
#Strings
word = "hEllo".lower()
print(word)
display_text = "* "*len(word)
print(display_text)
while True:
guess = input("Guess the character: ")
guess = guess[0].lower()
if guess.isalpha():
if guess in word:
ind = 0
for i in range(word.count(guess)):
ind = word.find(guess, ind)
#now time to reveal
#0 - 0, 1-2, 2-4
display_text = display_text[:ind*2] + guess+display_text[ind*2+1:]
ind = ind + 1
print(display_text)
if "*" not in display_text:
print("Congratulations!")
break
else:
print("Given character is not in the original word")
else:
print("Invalid character")
class Book:
book_count = 0
def __init__(self, author, title, book_id):
self.author = author
self.title = title
self.book_id = book_id
Book.book_count+=1
def getbook(self):
print(f"{self.title} is written by {self.author}")
@classmethod
def getBookCount(cls):
print("Total books available: ",cls.book_count)
book1 = Book('Swapnil Saurav','Learn and Practice Python', 9012)
book1.getbook()
book1.getBookCount()
#Inheritance
class School:
def __init__(self,schoolname):
self.schoolname = schoolname
def _displaydetails(self):
print("School name is ",self.schoolname)
class Student (School):
def __init__(self,stname, schoolname):
School.__init__(self,schoolname)
self.stname = stname
def displaydetails1(self):
print("Student name is ",self.stname)
def displaydetails1(self,name):
print("Student name is ",self.stname)
def displaydetails1(self,name,age):
print("Student name is ", self.stname)
class Teacher (School):
def __init__(self,tname):
self.tname = tname
def displaydetails(self):
print("Teacher name is ",self.tname)
sc1 =School("ABC International School")
st1 = Student("Sachin Tendulkar","XYZ International School")
t1 = Teacher("Kapil Dev")
sc1._displaydetails()
st1.displaydetails1()
t1.displaydetails()
'''
Public
Protected _var (single underscore)
Private __var (double underscore)
'''
#1. declare a class calc
#2. initialize functon to read 3 variables
#3. create another method to calculate: sum. multiply minus
#4. Display the result using another method
#5. Create another class to perform arithematic operators
## that you have learnt in Python: + - * / % ** //
class Calc:
def __init__(self,a,b,c):
self.n1 = a
self.n2 = b
self.n3 = c
self.add = "Addition not yet done"
self.mul = "Multiplication not yet done"
self.min = "Difference not yet done"
def calc(self):
self.add = self.n1 + self.n2
self.mul = self.n1 * self.n2
self.min = self.n1 - self.n2
def display(self):
print("Sum = ",self.add)
print("Multiplication = ",self.mul)
print("Difference = ",self.min)
class Arithmatic(Calc):
def __init__(self,a,b,c):
Calc.__init__(self,a,b,c)
self.n1 = a
self.n2 = b
self.n3 = c
self.div = "Division not yet done"
self.mod = "Modulus not yet done"
self.pow = "Power not yet done"
self.intdiv = "Integer Division not yet done"
def calc(self):
Calc.calc(self)
self.div = self.n1 / self.n2
self.mod = self.n1 % self.n2
self.pow = self.n1**self.n2
self.intdiv = self.n1 // self.n2
def display(self):
Calc.display(self)
print("Division = ",self.div)
print("Modulus = ",self.mod)
print("Power = ",self.pow)
print("Integer Division = ", self.intdiv)
c1 = Arithmatic(10,5,12)
c1.calc()
c1.display()
c2 = Calc(3,4,6)
c2.calc()
c2.display()
TYPES OF FUNCTION
def myfun1(a,b):
'''Example of Required Positional Argument'''
print(f"a is {a} and b is {b}")
sum = a + b
print("Sum: ",sum)
#return sum
def myfun2(a=16,b=6):
'''Example of Default Positional Argument'''
print(f"a is {a} and b is {b}")
sum = a + b
print("Sum: ",sum)
#return sum
def myfun3(a,*b,**c): #variable length arguments
print("a = ",a)
print("b = ", b) # * means tuple
print("c = ", c) # **- dictionary
myfun3(50,5,6,7,8,9,9,11,14,name="sachin",game ="Cricket")
#Keyword argument
n1,n2=14,26
print(myfun2(a=n2,b=n1))
result = myfun2(b=34)
n1,n2=14,26
print(myfun2(n1,n2))
result = myfun2(34)
#result*=2
print(result)
n1,n2=54,66
print(myfun1(n1,n2))
result = myfun1(34,76)
#result*=2
print(result)
#Types of functions based on input parameter:
## 1. Required positional arguments: YOu have to provide value and in same order (left to right)
## Default (positional) arguments
import os
print(os.name)
if os.name=="nt":
print("Its a Windows machine")
elif os.name=="posix":
print("its a Linux/Mac")
else:
print("Other OS")
print(os.getcwd())
#os.rmdir("Nov_2")
#os.rename("file1.txt", "file1dec.txt")
print("iterate in folder:")
from pathlib import Path
path_list = Path("C:\\Users\\Hp\\Poems\\")
for i in path_list.iterdir():
print(i)
os.mkdir("Test2")
fp= open(r"C:\Users\Hp\Poems\Poem1.txt","r") #r for read w for write a append
content = fp.read(200)
print(type(content))
print(content)
fp.seek(0)
content = fp.readline(500)
print(type(content))
print(content)
content = fp.readlines()
print(type(content))
print(content[4])
fp.close()
fp1 = open(r"C:\Users\Hp\Poems\testCopy\sample.txt","a")
if fp1.writable():
fp1.writelines(content)
fp1.close()
#Numpy
import numpy as np
x = range(16)
# range: 0 to upto 16 - 0...15
x = np.reshape(x,(4,4))
print(type(x))
print(x)
size = x.shape
print("Total rows = ",size[0])
print("Total columns = ",size[1])
#indexing
print(x[1,2])
print(x[3,1])
print(x[0,:])
print(x[:,0])
print(x[1:3,1:3])
#
x = np.zeros((3,3))
print(x)
x = np.ones((3,3))
print(x)
x = np.full((3,3),99)
print(x)
x = np.random.random((3,3))
print(x)
l1 = [[5,10,15],[9,10,11],[2,3,1]]
print(type(l1))
l1 = np.array(l1, dtype=np.int8)
print(l1)
print(type(l1))
l2 = np.array([[3,6,9],[7,14,21],[2,4,6]])
print(l2)
#addition
print(l1 + l2)
print(np.add(l2,l1))
print(l1 - l2)
print(np.subtract(l2,l1))
print(l1 / l2)
print(np.divide(l2,l1))
print("==========================")
print(l1,"\n",l2)
print(l1 @ l2)
print(np.matmul(l2,l1))
for i in l1.flat:
print(i)
x = np.identity(6)
print(x)
print("Printing l1:\n",l1)
print("Printing Transpose of l1:")
l1_t = np.transpose(l1)
print(l1_t)
l1_det = np.linalg.det(l1)
print("Determinant of L1 is ",l1_det)
l1_inv = np.linalg.inv(l1)
print("Inverse of L1 is ",l1_inv)
#Singular matrix have determinant zero so we cant find inverse of that matrix
# 2x-3y = 8
# 3x-4y = 12
# what is x & y?
# Numpy to solve linear algebra
# 2x +5y + 2z = -38
# 3x - 2y + 4z = 17
# -6x +y -7z = -12
import numpy as np
Coeff = [[2,5,2],[3,-2,4],[-6,1,-7]]
Coeff_mat = np.array(Coeff)
Coeff_det = np.linalg.det(Coeff_mat)
if Coeff_det ==0:
print("There are no possible solution for given equations")
else:
Const = [[-38],[17],[-12]]
Coeff_inv = np.linalg.inv(Coeff_mat)
sol = np.matmul(Coeff_inv,Const)
print("Solution is: \n",sol)
print(f"x={sol[0,0]}, y={sol[1,0]}, z={sol[2,0]}")
#SETS
set1 = {1,5,9,10,20}
print(type(set1))
set1.add(22)
print(set1)
set2 = set1 #deep copy - set2 and set1 will point to same location in memory
set3 = set1.copy() #shallow copy - create a duplicate copy
print("printing 1: ")
print("Set 1: ",set1)
print("Set 2: ",set2)
print("Set 3: ",set3)
set2.add(25)
set2.add(29)
print("printing 2: ")
print("Set 1: ",set1)
print("Set 2: ",set2)
print("Set 3: ",set3)
print("Set 1: ",id(set1))
print("Set 2: ",id(set2))
print("Set 3: ",id(set3))
#union, intersection, difference, symmetric difference
Set2 = {1, 20, 5, 22, 9, 10, 29, 25}
Set3 = {1, 20, 5, 22, 9, 10,31,35}
print(Set2.union(Set3))
print(Set2 | Set3)
print(Set2.intersection(Set3))
print(Set2 & Set3)
print(Set2.difference(Set3))
print(Set3 - Set2)
print(Set2.symmetric_difference(Set3))
print(Set2 ^ Set3)
print("Set 2: ",Set2)
print("Set 3: ",Set3)
print(Set2.symmetric_difference_update(Set3))
print("Set 2: ",Set2)
print("Set 3: ",Set3)
from datetime import datetime
currenttime = datetime.now()
print("Current time: ",currenttime)
n=10000
counter = 0
for i in range(n):
for j in range(n):
counter+=1
if counter*100 % (n*n)==0:
print(f"{counter*100//(n*n)}% Task Completed")
endtime = datetime.now()
print("Total time taken by the program is ",endtime-currenttime)
from datetime import datetime, timedelta
print("Current time: ",datetime.now())
print("Current date: ",datetime.now().strftime("%Y,%m-%d"))
print("Current year: ",datetime.now().year)
print("Current month: ",datetime.now().month)
print("Current day: ",datetime.now().day)
print("Current hour: ",datetime.now().hour)
print("Current minute: ",datetime.now().minute)
print("Current second: ",datetime.now().second)
import time
print("Current time: ",time.strftime("%Y,%m-%d"))
print("Total time: ",time.time())
print("Tomorrow's time: ",datetime.now()+timedelta(days=1))
from pytz import timezone
print("Current time in US Eastern is",datetime.now(timezone("US/Eastern")).strftime("%Y-%m-%d"))
# random numbers
import random
random.seed(100)
print("Random = ",random.random()) # randon no. between 0 & 1
print("Random = ",int(random.random()*1000))
print("Random Integer values: ",random.randint(500,9000))
choices = ["ONE","TWO","THREE","FOUR","FIVE","SIX"]
print("One value from the list: ",random.choice(choices))
random.shuffle(choices)
print("random shuffle: ",choices)
#MAP - works with List where you want to apply same calculation to all the numbers
distances = [1100,1900,4500,6500,3400,2900,5400]*500
dist_ft = 0 #3.1 *
from datetime import datetime
start=datetime.now()
dist_ft = list(map(lambda x:3.1*x,distances))
end=datetime.now()
print("Total time taken by MAP = ",end-start)
start=datetime.now()
dist_ft2 = []
for i in distances:
val = i*3.1
dist_ft2.append(val)
#print("Output using Loops = ",dist_ft2)
end=datetime.now()
print("Total time taken by LOOP = ",end-start)
