# 1. Write a Python program to check whether the no is even and odd.
n = int(input("Enter a number:"))
if (n % 2 == 0):
print(n, "is even number")
else:
print(n, "is odd number")
# 2. Write a Python program to display Greater no between 3 inputs.
a = int(input("Enter first number:"))
b = int(input("Enter second number:"))
c = int(input("Enter third number:"))
if a > b and a > c:
print(a, "is largest")
elif b > a and b > c:
print(b, "is largest")
else:
print(c, "is largest")
# 3. Write a Python program to print prime no between n and m.
n = int(input("Enter lower range:"))
m = int(input("Enter upper range:"))
l = []
print("The Prime numbers in the range are:")
for i in range(n, m+1):
count = 0
for j in range(1, i+1):
if i % j == 0:
count += 1
if count == 2:
l.append(i)
print(l)
for num in range(n, m+1):
if num > 1:
for i in range(2, num):
if (num % i) == 0:
break
else:
print(num)
# 4.Write a Python program to display Fibonacci series.
# Write function in python for the Fibonacci Series
def fib(n):
result = []
a, b = 0, 1
while b < n:
result.append(b)
a, b = b, a+b
print(result)
n = int(input("Enter a range:"))
fib(n)
# 5. Write a Python program factorial of no.
n = int(input("Enter a number:"))
fact = 1
if n < 0:
print(n, "Factorial of negative number doesn't exist")
elif n == 0:
print(n, "factorial is 1")
else:
for i in range(1, n+1):
fact = fact*i
print("The factorial of number", n, "is", fact)
# 6.Write a Python script to generate and print a dictionary that contains a
# number (between 1 and n) in the form (x, x*x).
# Sample Dictionary ( n = 5) :
# Expected Output : {1: 1, 2: 4, 3: 9, 4: 16, 5: 25}
n = int(input("Enter a number:"))
d = dict()
for x in range(1, n+1):
d[x] = x*x
print(d)
# 7.Write a Python script to concatenate following dictionaries to create a new one.
# dic1={1:10, 2:20}
# dic2={3:30, 4:40}
# dic3={5:50,6:60}
# Expected Result : {1: 10, 2: 20, 3: 30, 4: 40, 5: 50, 6: 60}
dic1 = {1: 10, 2: 20}
dic2 = {3: 30, 4: 40}
dic3 = {5: 50, 6: 60}
dic4 = {}
for d in (dic1, dic2, dic3):
dic4.update(d)
print("Updated Dictionary:", dic4)
# 8.Write a Python program to perform star pattern.
# *
# **
# ***
# ****
n = int(input("Enter rows:"))
for row in range(0, n):
for col in range(0, row+1):
print("*", end="")
print()
# 9. Write a Python program to perform star Pattern.
# ****
# ***
# **
# *
n = int(input("Enter no. of rows:"))
for row in range(n):
for col in range(n-row):
print("*", end="")
print()
# 10.Write a Python program to construct the following pattern, using a nested loop number.
# 687954231
# 87954231
# 7954231
# 954231
# 54231
# 4231
# 231
# 31
# 1
n = int(input("Enter no. of rows:"))
num = 9
for row in range(1, n+1):
for col in range(num, 0, -1):
if (col == 9):
col = 6
elif (col == 6):
col = 9
elif (col == 3):
col = 2
elif (col == 2):
col = 3
print(col, end="")
num = num-1
print()
# 11.Write a Python program to get a string from a given string where all
# occurrences of its first char have been changed to '$', except the first char itself
#
# Sample String : 'restart'
# Expected Result : 'resta$t'
def func1():
str1 = input("Enter a string:")
char = str1[0]
str1 = str1.replace(char, '$')
str1 = char + str1[1:]
print(str1)
func1()
# 12.Write a Python program to remove the characters which have odd index values of a given string
def remov():
str = input("Enter a string: ")
i = 0
new_str = ' '
while i < len(str):
new_str += str[i]
i += 2
return new_str
print("String after removing all odd index values:", remov())
# 13. Write a Python program to get a string made of the
# first 2 and the last 2 chars from a given a string.
# If the string length is less than 2, return instead of the empty string
# Sample String : “Welcome to DYPSOMCA”
# Expected Result : WeCA
# Sample String : 'We'
# Expected Result : 'WeWe'
# Sample String : ' w'
# Expected Result : Empty String
def func1(str):
if len(str) < 2:
return 'Empty string'
return str[0:2]+str[-2:]
print(func1('Welcome to DYSOMCA'))
print(func1('We'))
print(func1('w'))
# 14.Write a Python class to implement pow(x, n).
class solution:
def pow(self, x, n):
if x == 0 or x == 1 or n == 1:
return x
if x == -1:
if n % 2 == 0:
return 1
else:
return -1
if n == 0:
return 1
if n < 0:
return 1/self.pow(x, -n)
val = self.pow(x, n//2)
if n % 2 == 0:
return val*val
return val*val*x
print(solution().pow(2, -6))
print(solution().pow(3, 10))
# 15. Write a Python class named Circle constructed by a radius and
# two methods which will compute the area and the perimeter of a circle.
class Circle:
def __init__(self, r):
self.rad = r
def area(self):
area = 3.14*self.rad*self.rad
print("Area of Circle:", area)
def peri(self):
per = 2*3.14*self.rad
print("Perimeter:", per)
obj = Circle(9)
obj.area()
obj.peri()
# 16. Write a Python program to get the
# factorial of a non-negative integer using recursion.
def fact(n):
if n == 0:
return 1
elif n < 0:
print("Number can't be negative")
else:
return n*fact(n-1)
n = int(input("Enter a number:"))
print("Factorial of", n, "is", fact(n))
# 17. Write a Python program to read first n lines of a file
f = open("book.txt", "r")
l = f.readlines()
x = int(input("Enter a no. of lines:"))
n = l[:x]
print(n)
# 18. Write a Python program to read a file line by line store it into a variable.
f = open("book.txt", "r")
data = f.readlines()
print(data)
s =data
print(s)
# 19.Write a Python program to combine each line
# from first file with the corresponding line in second file.
def comblines():
f1 = open("File1.txt", "r")
f2 = open("File2.txt", "r")
f3 = open("Merge.txt", "w")
lines1 = f1.readlines()
lines2 = f2.readlines()
for i in range(len(lines1)):
merge = lines1[i]+lines2[i]
f3.write(merge)
f1.close()
f2.close()
f3.close()
print("Data written to a Merge.txt successfully!!!")
comblines()
# 20.Write a program in which you need to calculate size of rectangle,
# square, circle and Triangle.(Separate Package need to be created for the same)
cal.py
demo.py
# 21. Write a program for Decorator and Generator.
# Decorator
def first(msg):
print(msg)
def second(func, msg):
func(msg)
second(first, "Hello!")
# Generator
def even_iterator():
n = 0
n += 2
yield n
n += 2
yield n
n += 2
yield n
num = even_iterator()
print(next(num))
print(next(num))
print(next(num))
# 22. Write a program to validate URL using regular expression.
import re
def validateURL(url):
regex = "^((http|https)://)[-a-zA-Z0-9@:%.\\+~#?&//=]{2,256}\\.[a-z]{2,6}\\b([-a-zA-Z0-9@:%.\\+~#?&//=]*)$"
r = re.compile(regex)
if (re.search(r, url)):
print("Valid")
else:
print("Not Valid")
url1 = input("Enter an URL:")
validateURL(url1)
# 23. Write a program to validate email using regular expression.
import re
regex = '^[a-z0-9]+[\._]?[a-z0-9]+[@]\w+[.]\w{2,3}$'
def check(email):
if (re.search(regex, email)):
print('Valid Mail Address')
else:
print('Invalid Mail Address')
if __name__ == '__main__':
email = input("Enter Email:")
check(email)
# 24. Write a program to validate Password using regular expression.
# Condition
# 1. Minimum length of password: 8 characters
# 2. Atleast one alphabet must bewteen [a-z]
# 3. Atleast one alphabet should be of uppercase [A-Z]
# 4. Atleast 1 number or digit between [0-9]
# 5. Atleast 1 charcter from [$,@,#]
import re
def main():
lower = re.compile(r'[a-z]')
upper = re.compile(r'[A-Z]')
number = re.compile(r'\d')
special = re.compile(r'[$#@]')
password = input("Enter a password:")
if len(password) < 8:
print("Password length should be more than 8 characters!!!")
if not lower.search(password):
print("Password should consist atleast one lowercase letter!!!")
if not upper.search(password):
print("Password should consist atleast one uppercase letter!!!")
if not number.search(password):
print("Password should consist atleast one number!!!")
if not special.search(password):
print("Password should consist atleast one special character")
else:
print("Valid Password!!!")
if __name__ == '__main__':
main()
# 25.Write a program that ask for an integer number.
# Accepted number should be in between 1 to 10 and break the loop if not then generate the exception and print an error message.
while True:
try:
n = int(input("Enter a number:"))
if n > 10 or n < 1:
raise Exception
else:
print("Number is within range")
break
except Exception:
print("Number should be between 1 to 10")
# 26. Write a Python Program to perform synchronized Multi-threading.
from threading import *
import time
l = Lock()
def wish(name, age):
for i in range(2):
l.acquire()
print("Hi", name)
time.sleep(2)
print("Your age is:", age)
l.release()
t1 = Thread(target=wish, args=("Suraj", 23))
t2 = Thread(target=wish, args=("Tony", 30))
t1.start()
t2.start()
# 27. Write a Program for Performing basic CRUD operations with MongoDB and python.
import pymongo
db = pymongo.MongoClient("mongodb://localhost:27017/")
database = db["Employee3"]
collection = database["EmployeeDetails"]
while True:
print("\nMAIN MENU")
print("1.Insert")
print("2.Update")
print("3.Delete")
print("4.Display")
print("5.Exit")
choice1 = int(input("Enter the Choice:"))
if choice1 == 1:
a = input("Enter your name:")
b = input("Enter your address:")
dict1 = {"name": a, "address": b}
collection.insert_one(dict1)
print("Data Entered Successfully!!")
elif choice1 == 2:
while True:
print("\nUpdate Details of?")
print("1.Name")
print("2.Address")
print("3.Exit")
choice2 = int(input("Enter your choice:"))
if choice2 == 1:
a = input("Enter your previous name:")
b = input("Enter your name to be updated:")
prev = {"name": a}
nextt = {"$set": {"name": b}}
collection.update_one(prev, nextt)
print("Name Updated Successfully!!")
elif choice2 == 2:
a = input("Enter your name:")
b = input("Enter your address to be updated:")
prev = {"name": a}
nextt = {"$set": {"address": b}}
collection.update_one(prev, nextt)
print("Address Updated Successfully!!")
elif choice2 == 3:
break
elif choice1 == 3:
a = input("Enter the record to be deleted:")
d = {"name": a}
collection.delete_one(d)
print('Record Deleted Successfull!!')
elif choice1 == 4:
x = collection.find()
for i in x:
print(i)
elif choice1 == 5:
break
# 28. Write a Program Create Numpy Array with Random Values – numpy.random.rand()
import numpy as np
array = np.random.rand(2, 2)
print("\nArray filled with random value:", array)
# 29. Write a Program Numpy array and Reverse the Array.
import numpy as np
x = np.arange(10, 21)
print("Original Array:")
print(x)
print("Reverse Array:")
x = x[::-1]
print(x)
# 30. Write a Programs for series and data frames.
Series
import pandas as pd
import numpy as np
arr = np.array([2, 4, 6, 7, 10, 20])
si = pd.Series(arr)
print(si)
# Data Frames
s1 = pd.Series([1, 2, 3])
s2 = pd.Series([70, 80, 60])
s3 = pd.Series(['Varad', 'Yogesh', 'Mayank'])
data = {'RollNo': s1, 'Marks': s2, 'Name': s3}
dt = pd.DataFrame(data)
print(dt)
# 31. Write a Program for data visualization using Matplotlib.
# Line Chart
from matplotlib import pyplot as plt
x = [2, 4, 8, 10]
y = [8, 5, 9, 12]
plt.xlabel('x-Axis')
plt.ylabel('y-Axis')
plt.title("Line Chart")
plt.plot(x, y)
plt.show()
# Bar Graph
x = [2, 4, 8, 10]
y = [8, 5, 9, 12]
plt.title("Bar Graph")
plt.bar(x, y)
plt.show()
# Pie Chart
x = [2, 4, 8, 10]
plt.title("Pie Chart")
plt.pie(x)
plt.show()
# Scatter plot
x = [2, 4, 8, 10]
y = [8, 5, 9, 12]
plt.title("Scatter Plot")
plt.scatter(x, y)
plt.show()
# Histogram
x = [2, 4, 8, 10]
plt.title("Histogram")
plt.hist(x)
plt.show()
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