Program1: check whether the number is belongs to Fibonacci series or not

PART A
n=int(input("Enter the number: ")) c=0
a=1 b=1
if n==0 or n==1:
print("Yes the number belongs to Fibonacci series") else:
while c<n: c=a+b b=a
a=c if c==n:

print("Yes,the number belongs to Fibonacci series") else:
print("No, the number not belongs to Fibonacci series")

==========OUTPUT=========
Enter the number: 5
Yes the number belongs to fibonacci series

Enter the number: 4
No the number not belongs to fibonacci series




Program 2: Solve Quadratic Equations


#import complex math module import cmath

print("Enter the value of a") a=float(input()) print("Enter the value of b") b=float(input()) print("Enter the value of c") c=float(input())

#calculate the discriminant d=(b**2)-(4*a*c)

#find the solution
soln1=(-b-cmath.sqrt(d))/(2*a) soln2=(-b+cmath.sqrt(d))/(2*a)

#print("The solution are") print("solution1=",soln1) print("solution2=",soln2)




=========OUTPUT=======
Enter the value of a 1
Enter the value of b 2
Enter the value of c 3
solution1= (-1-1.4142135623730951j) solution2= (-1+1.4142135623730951j)


Program 3: Find the sum of natural numbers


num = int (input("Enter a number: ")) if num< 0:
print("Enter a positive number") else:
sum = 0
while (num> 0):
sum += num num-=1
print("The sum is:", sum)



========OUTPUT========

Enter a number: 10 The sum is: 55


Program 4: Display Multiplication table


num = int(input("Display multiplication table of? ")) # Iterate 10 times from i = 1 to 10
for i in range(1, 11): print(num, 'x', i, '=', num*i)

===========OUTPUT=======
Display multiplication table of? 5 5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50


Program 5: To check if a number is prime or not


num = int(input('Please enter a number:')) i = 2
flag = 0 while i<num:
if num%i == 0: flag = 1
print (num,"is NOT a prime number!"); i = i + 1
if flag == 0:
print (num,"is a prime number!");

=========OUTPUT========
Please enter a number:7 7 is a prime number!

Please enter a number:4
4 is NOT a prime number!


Program 6: Implement sequential search


def lin_search(list1,n,key): for i in range(0,n):
if(list1[i]==key): return i
return -1


n=int(input("Enter the size")) list1=input("Enter the numbers:").split() list1=[int(x)for x in list1]
key=int(input("Enter the key Element to be searched")) n=len(list1)
res=lin_search(list1,n,key) if(res==-1): print("Element not found") else:
print("Element found at index:",res)


==========OUTPUT=======
Enter the size:5
Enter the numbers:2 4 23 7 50
Enter the key Element to be searched:23 Element found at index: 2

Enter the size:4
Enter the numbers:1 2 3 43
Enter the key Element to be searched:10 element not found


Program 7: Create a calculator program


def add(x, y): return x + y
def subtract(x, y): return x - y
def multiply(x, y): return x * y
def divide(x, y): return x / y
print("Select operation.") print("1.Add") print("2.Subtract") print("3.Multiply") print("4.Divide")
while True:
choice = input("Enter choice(1/2/3/4): ") if choice in ('1', '2', '3', '4'):
try:
num1 = float(input("Enter first number: ")) num2 = float(input("Enter second number: "))
except ValueError:
print("Invalid input. Please enter a number.") continue
if choice == '1':
print(num1, "+", num2, "=", add(num1, num2)) elif choice == '2':
print(num1, "-", num2, "=", subtract(num1, num2))

elif choice == '3':
print(num1, "*", num2, "=", multiply(num1, num2)) elif choice == '4':
print(num1, "/", num2, "=", divide(num1, num2)) next_calculation = input("Let's do next calculation? (yes/no): ")
if next_calculation == "no": break
else:
print("Invalid Input")

============OUTPUT==========
Select operation. 1.Add 2.Subtract 3.Multiply 4.Divide
Enter choice(1/2/3/4): 1 Enter first number: 23 Enter second number: 12
23.0 + 12.0 = 35.0
Let's do next calculation? (yes/no): yes Enter choice(1/2/3/4): 2
Enter first number: 12 Enter second number: 6
12.0 - 6.0 = 6.0
Let's do next calculation? (yes/no): no

Program 8:Explore string functions


str1=input("Enter the first string:") str2=input("Enter the second string:")
print("conversion of uppercase of",str1,"is",str1.upper()) print("conversion of lowercase of",str2,"is",str2.lower()) print("swapcase of string",str1,"is",str1.swapcase()) print("title-case-of string",str1,"is",str1.title())
print("string replacement of first string",str1,"is",str1.replace(str1,str2)) string="python is awesome"
capitalized_string=string.capitalize() print("\n old string ",string) print("capitalized string",capitalized_string) name="bcacollegenidasoshi"
if name.isalpha()==True:
print("All characters are alphabets") else:
print("All characters are not alphabets") print("Maximum is",max(1,2,3,4))
num=[1,3,2,8,5,10,6]
print("Maximum number is:",max(num)) teststring="python"
print("Length of",teststring,"is",len(teststring))


===========OUTPUT=========
Enter the first string:bca
Enter the second string:NIDASOSHI conversion of uppercase of bca is BCA
conversion of lowercase of NIDASOSHI is nidasoshi swapcase of string bca is BCA
title-case-of string bca is Bca
string replacement of first string bca is NIDASOSHI

old string python is awesome capitalized string Python is awesome All characters are alphabets Maximum is 4
Maximum number is: 10 Length of python is 6


Program 9: To implement selection sort


# Initialize an empty list array = []
print("Enter the limit") n=int(input())

for i in range(n):
element = int(input("Enter the Element: ")) array.append(element)

for i in range(n-1): min = i
for j in range(i+1, n):
if array[min] > array[j]: min = j
if min != i:
temp = array[i] array[i] = array[min] array[min] = temp

print("The Sorted array in ascending order:", end='\n') for i in range(n):
print(array[i])


=========OUTPUT========
Enter the limit 5
Enter the Element: 12 Enter the Element: 2 Enter the Element: 5 Enter the Element: 23 Enter the Element: 1
The Sorted array in ascending order: 1
2
5
12
23


Program 10:To implement stack


# initial empty stack stack = []
# append() function to push # element in the stack stack.append('1') stack.append('2') stack.append('3') print(stack)
# pop() function to pop # element from stack in # LIFO order
print('\nElements poped from my_stack:') print(stack.pop())
print(stack.pop()) print(stack.pop()) #print(stack.pop())
print('\nmy_stack after elements are poped:') print(stack)




========OUTPUT======== ['1', '2', '3']

Elements poped from my_stack: 3
2
1

my_stack after elements are poped: [ ]


Program 11: Read and Write into a file


#open a file for writing file=open("E:\klcF.txt","w")

#write some text to the file file.write("Welcome to BCA Department\n")

L = ['This is BCA College \n', 'Place is Nidasoshi \n', 'Fourth semester \n'] file.writelines(L)

#close the file file.close()

#open the file for reading file=open("E:\klcF.txt","r")

#read the contents of the file into a string variable file_cont=file.read()

#print the contents of the file print(file_cont)


===========OUTPUT==========
E:\klcF.txt
Welcome to BCA Department This is BCA College
Place is Nidasoshi Fourth semester


PART B
# Program 1:Demonstrate usage of basic regular expression


import re
# Search String str="The rain in spain" x=re.findall("ai",str)
print("Search of string 'ai': ",x)

x=re.search("\s" ,str)
print("The first white-space character is located in position : ",x.start())

x=re.split("\s",str,1)
print("Split the string in the occurance of first white-space:",x)

x=re.sub("\s","9",str)
print("Each white-space is replaced with 9 digit: ",x) print("	")

# Metacharacters x=re.findall("[a-g]",str)
print("The letters in between a to g in the string:",x)

x=re.findall("spain$",str) if(x):
print("\n",str, ": Yes, this string ends with 'spain' word ") else:

print("\n No match ") x=re.findall("^The",str) if(x):
print("\n",str,": Yes, this string starts with 'The' word") else:
print("\n No match")

str1="The rain in spain falls mainly in the plain" x=re.findall("ai*",str1)
print("\n All ai matching characters:",x) if(x):
print("Yes, there is atleast one match") else:
print("No match")

x=re.findall("all{1}",str1)
print("\n The string which contains 'all':",x) if(x):
print("Yes, there is atleast one match") else:
print("No match")

str2="That will be 59 dollars" x=re.findall("\d",str2)
print("\n Digits in the string:",x)

x=re.findall("do...rs",str2)
print("\n Dot metacharacter matches any character:",x)


============OUTPUT==========
Search of string 'ai': ['ai', 'ai']
The first white-space character is located in position : 3
Split the string in the occurance of first white-space: ['The', 'rain in spain'] Each white-space is replaced with 9 digit: The9rain9in9spain
------------------------------------------------------------------------------
The letters in between a to g in the string: ['e', 'a', 'a'] The rain in spain : Yes, this string ends with 'spain' word The rain in spain : Yes, this string starts with 'The' word All ai matching characters: ['ai', 'ai', 'a', 'ai', 'ai']
Yes, there is atleast one match
The string which contains 'all': ['all'] Yes, there is atleast one match
Digits in the string: ['5', '9']
Dot metacharacter matches any character: ['dollars']


Program 2: Demonstrate use of advanced regular expressions for -data validation.


# importing re library import re
p=input("Enter your password:") x=True
while x:
if(len(p)<6 or len(p)>20): break
elif not re.search("[a-z]",p): break
elif not re.search("[A-Z]",p): break
elif not re.search("[0-9]",p): break
elif not re.search("[$#@]",p): break
elif re.search("\s",p): break
else:
print("Valid Password") x=False
break
if x:
print("Invalid Password")


=========== OUTPUT========
Enter your password:Kavita123@# Valid Password

Enter your password:bcacollege Invalid Password


Program 3: Demonstrate use of List


print("PROGRAM FOR BUILT-IN METHODS OF LIST\n ");
demonstrate List numbers=[1,2,13,40,5] print(numbers) sum_of_numbers=sum(numbers) print("Sum=",sum_of_numbers) max_number=max(numbers) print("Max=",max_number) min_number=min(numbers) print("Min=",min_number) numbers.sort()
print("sorted numbers in ascending",numbers) numbers.reverse()
print("sorted numbers in descending",numbers) numbers.append(6)
print("Updated numbers",numbers) numbers.remove(13) print("Removed",numbers) numbers.clear()
print("List after clear",numbers)


==========OUTPUT========
PROGRAM FOR BUILT-IN METHODS OF LIST

[1, 2, 13, 40, 5]
Sum= 61
Max= 40
Min= 1
sorted numbers in ascending [1, 2, 5, 13, 40]
sorted numbers in descending [40, 13, 5, 2, 1]
Updated numbers [40, 13, 5, 2, 1, 6]
Removed [40, 5, 2, 1, 6] List after clear []




Program 4: Demonstrate use of Dictionaries


#deomstrate Dictionary person={"name":"Amit","age":"21","city":"Bangaluru","occupation":"student"}

#access values in the dictionary print(person["name"]) print(person["age"]) print(person["city"]) print(person["occupation"])

#modify values in the dictionary person["age"]=25 person["occupation"]="Engineer" print(person)

#add a new key-value pair to the dictionary person["country"]="India"
print(person)

#remove a key-value pair from dictonary del person["city"]
print(person)

#check if key-value exist in the dictionary if "occupation" in person: print("occupation:",person["occupation"])




============OUTPUT==========
Amit 21
Bangaluru student
{'name': 'Amit', 'age': 25, 'city': 'Bangaluru', 'occupation': 'Engineer'}
{'name': 'Amit', 'age': 25, 'city': 'Bangaluru', 'occupation': 'Engineer', 'country': 'India'}
{'name': 'Amit', 'age': 25, 'occupation': 'Engineer', 'country': 'India'} occupation: Engineer


Program 5: Create SQLite Database and perform operations on tables


import sqlite3
# create a connection to a Sqlite database conn=sqlite3.connect('test.db')
# create a cursor object cursor=conn.cursor()
# create a table
cursor.execute("create table emp2(id integer, name tect)") #insert a record into the tables
cursor.execute("insert into emp2(id,name) values(101,'ravi')") cursor.execute("insert into emp2(id,name) values(102,'raj')") cursor.execute("insert into emp2(id,name) values(103,'ramesh')") print("\nDisplaying the emp2 table")
cursor.execute("select *from emp2") rows=cursor.fetchall()
for row in rows: print(row)
print("\nafter update and delete the records in the table") # update records in the table
cursor.execute("update emp2 set name ='Akash' where id=101") #delete a record from the table
cursor.execute("delete from emp2 where id=103") print("Displaying the emp2 table") cursor.execute("select *from emp2") rows=cursor.fetchall()
for row in rows: print(row)

#drop the table print("\nTable is droped...")
cursor.execute("drop table emp2") #commit the transaction conn.commit()
#close the cursor and the connections cursor.close()
conn.close()

=========OUTPUT=======
Displaying the emp2 table (101, 'ravi')
(102, 'raj')
(103, 'ramesh')

after update and delete the records in the table Displaying the emp2 table
(101, 'Akash')
(102, 'raj')

Table is droped...


Program 6: Create a GUI using Tkinter module


import tkinter as tk
from tkinter import messagebox #function to handle button click event def show_message():
messagebox.showinfo("Hello","welcome to the GUI")


#create the main window window=tk.Tk() window.title("My GUI") window.geometry("300x200")

#create label widget label=tk.Label(window,text="Hello,world") label.pack()

#create a button widget
button=tk.Button(window,text="click me",command=show_message) button.pack()

#start the main event loop window.mainloop()




=========OUTPUT==========






Program 7: Demonstrate exceptions in python


try:
num1=int(input("Enter the numerator:")) num2=int(input("Enter the denominator:")) result=num1/num2
print("Result:",result) except ValueError: print("Invalid input") except ZeroDivisionError:
print("Cannot divide by zero") else:
print("No exception occur") finally:
print("End of program")

===========OUTPUT==========

Enter the numerator:12.2 Invalid input
End of program


Enter the numerator:10 Enter the dinominator:0 Cannot divide by zero End of program


Program 8:Drawing Line chart and Bar chart using Matplotlib


import matplotlib.pyplot as plt # Data
x = [2, 3, 4, 6, 8]
y = [2, 3, 4, 6, 8]
# Plot the line chart plt.subplot(121)
plt.plot(x, y, color='tab:red')

# Add labels and title plt.title('Line Chart') plt.xlabel('X axis label') plt.ylabel('Y axis label')

# Show the plot plt.subplot(122) plt.title('Bar Chart') plt.xlabel('X axis label') plt.ylabel('Y axis label')

plt.bar(x, y) plt.show()


==========OUTPUT=======








Program 9:Drawing Histogram chart and Pie chart using Matplotlib


import matplotlib.pyplot as plt import numpy as np

#Generate some random data data=np.random.randint(0,100,100)

#create histogram plt.subplot(121) plt.hist(data,bins=20)
plt.title("Histogram of random data") plt.xlabel("value") plt.ylabel("frequency")
#sample data sizes=[30,25,20,15,10] labels=['A','B','C','D','E']
#create pie chart plt.subplot(122) plt.pie(sizes,labels=labels) plt.title("PIE CHART") plt.show()


==========OUTPUT=========






Program 10:perform arithmetic operations on the Numpy arrays


import numpy as np
# Initializing our array
array1 = np.arange(9, dtype = np.float64).reshape(3, 3) #array1 = np.arange(9, dtype = np.float64)
print('First Array:') print(array1) print('Second array:')
array2 = np.arange(11,20, dtype = np.float_).reshape(3, 3) #array2 = np.arange(11,20, dtype = np.int_)
print(array2) print('\nAdding two arrays:') print(np.add(array1, array2))

print('\nSubtracting two arrays:') print(np.subtract(array1, array2))

print('\nMultiplying two arrays:') print(np.multiply(array1, array2))

print('\nDividing two arrays:') print(np.divide(array1, array2))


=========OUTPUT=======
First Array:	Second array:
[[0. 1. 2.]	[[11. 12. 13.]
[3. 4. 5.]	[14. 15. 16.]
[6. 7. 8.]]	[17. 18. 19.]]

Adding two arrays:
[[11. 13. 15.]
[17. 19. 21.]
[23. 25. 27.]]

Subtracting two arrays:
[[-11. -11. -11.]
[-11. -11. -11.]
[-11. -11. -11.]]

Multiplying two arrays:
[[ 0. 12. 26.]
[ 42. 60. 80.]
[102. 126. 152.]]

Dividing two arrays:
[[0.	0.08333333 0.15384615]
[0.21428571 0.26666667 0.3125	]
[0.35294118 0.38888889 0.42105263]]


Program 11:Create data frame from Excel sheet using Pandas and perform operations on data frames


import pandas as pd
#Read data from excel sheets in an Excel file
data = pd.read_excel('file.xlsx', sheet_name='kavita') print("\n**Displaying Data from DataFrames**\n") print(data)
print("\n**OPERATIONS ON DATAFRAMES**\n") print("\n1.View the first few rows of the DataFrame :") print(data.head())
print("\n2.Number of rows and columns in the DataFrame :",end="") print(data.shape)
print("\n3.Filtered data(Age column<25) :") filtered_data =data[data['Age'] < 25] print(filtered_data)
print("\n4.Sort DataFrame based on 'Age' col in ascending order :") sorted_data = data.sort_values(by='Age', ascending=True) print(sorted_data)
print("\nProgram Closed...")


=========OUTPUT=========
**Displaying Data from DataFrames**

name
Age
marks
0	kiran
23
70
1	savita
20
90
2	kavya
25
80
3	sagar
18
70
4	sumit
21
56
5	sanket
22
50
6	akash
24
70
7	ramesh
26
40
8	ravi
27
45
9	soumya
28
90
10 shilpa
17
65



**OPERATIONS ON DATAFRAMES**
View the first few rows of the DataFrame : name Age marks
kiran	23	70
savita	20	90
kavya	25	80
sagar	18	70
sumit	21	56

Number of rows and columns in the DataFrame :(11, 3)


Filtered data(Age column<25) : name Age marks
kiran	23	70
savita	20	90
sagar	18	70
sumit	21	56
sanket	22	50
akash	24	70
10 shilpa	17	65

Sort DataFrame based on 'Age' col in ascending order :



name
Age
marks
10
shilpa
17
65
3
sagar
18
70
1
savita
20
90
4
sumit
21
56
5
sanket
22
50
0
kiran
23
70
6
akash
24
70
2
kavya
25
80
7
ramesh	26
40
8
ravi	27
45
9
soumya	28
90



Program Closed...