Python 4thupdate - fdher PDF

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P.R. ENGINEERING COLLEGE (AICTE Approved, Affiliated to Anna University. Chennai) (UGC Recognized Under 2(f) & 12(B)) (Accredited with ‘A’ Grade by NAAC) VALLAM, THANJAVUR - 613403

DEPARTMENT OF

MCA

RECORD NOTE

Name

:

Reg.No

:

Subject Code/Title :

MC4112 / Python Programming

Semester/Year

:

1st Semester / 1st Year

Department

:

Master of Computer Application

P.R. ENGINEERING COLLEGE (AICTE Approved, Affiliated to Anna University. Chennai) (UGC Recognized Under 2(f) & 12(B)) (Accredited with ‘A’ Grade by NAAC) VALLAM, THANJAVUR - 613403

MCA

DEPARTMENT OF

CERTIFICATE Certified that this is the bonofider record of practical work done in the MC4112 / Python Programming By Branch

Laboratory

Reg.No Master of Computer Application

During the Academic Year

Staff in Charge

Semester

1st Semester

2021 - 2022

Head of the Department

Submitted for the University Practical Examination held on

Internal Examiner

External Examiner

INDEX S.NO

CONTENT

1

Simple statements and Expressions: I. Exchange the values of two variables II. Circulate the values of n variables III. Distance between two points

2

Scientific problems using Conditionals and Iterative loops

3

Linear search and Binary search

4

Selection sort, Insertion sort

5

Merge sort, Quick Sort

6

Implementing applications using Sets, Dictionaries

7

Implementing programs using Functions

8

Implementing programs using Strings

9

Modules and Python Standard Libraries: I. Pandas II. Numpy III. Matplotlib IV. scipy

10

Implementing real-time/technical applications using File handling

11

Implementing real-time/technical applications using Exception handling

12

Implementing real-time/technical applications using Exception handling.

13

Creating and Instantiating classes

MARKS

PAGE NO SIGNATURE

EX NO : 01 Date :

Simple statements and expressions. (exchange the values of two variables, circulate the values of n variables, distance between two points)

1(a).Exchange the value of two variables. Aim: To exchange the given values of two variables using python.

Algorithm: Step 1: Start the program. Step 2: Declare the variables a, b and read the inputs. Step 3: Print a before swapping variable. Step 4: Declare third variable, c. Step 5: Set c=a, a=b, b=c. Step 6: Print the value of a and b. Step 7: Stop the program.

Program: print("Swapping using temporary variable") a = int(input("a = ")) b = int(input("b = ")) print("Before Swapping") print("a = ", a) print("b = ", b) c = a a = b b = c print("After Swapping") print("a = ", a) print("b = ", b)

Output:

1(a).Exchange the value of two variables

Result: Thus the python programs to swap two input numbers have been done successfully And the output is verified.

1(b).Circulate the values of n variables. Aim: To circulate the values of n variables using python.

Algorithm: Step 1: Start the program. Step 2: Declare a function circulate with two parameters. Step 3: Set the value of i to 1. Step 4: While the value of i is less than or equal to number of rotations, repeat the instructions in step 5 and step 6. Step 5: Declare a variable j to store a length of listt using len() function. Step 6: While the value of j is greater than 0, repeat the instruction in step 7 and step 8. Step 7: Declare a variable temp for storing listt value. Step 8: Print a rotation of i. Step 9: Set a value of listt. And stop the program.

Program: def circulate(listt, num_of_rotation): i = 1 while(i 0): temp = listt[j] listt[j] = listt[j-1] listt[j-1] = temp j = j-1 print("rotation", i, listt) i = i+1 return listt = [1, 2, 3, 4, 5] circulate(listt, 3)

Output:

1(b). Circulate the values of n variables

Result: Thus the python programs to circulate the value of n variable have been done successfully and the output is verified.

1(c).Distance between two points. Aim: To find a distance between two points using python.

Algorithm: Step 1: Start the program. Step 2: Take a two points as an input from a user. Step 3: Calculate the difference between the corresponding,  X-coordinates i.e.: X2 - X1  Y-coordinates i.e.: Y2 - Y1 of two points. Step 4: Apply the formula derived from Pythagorean Theorem. √(𝒙𝟐 − 𝒙𝟏)𝟐 + (𝒚𝟐 − 𝒚𝟏)𝟐 Step 5: Print a value of distance. Step 6: Stop the program.

Program: import math x1 = int(input("enter x1 : ")) y1 = int(input("enter y1 : ")) x2 = int(input("enter x2 : ")) y2 = int(input("enter y2 : ")) distance = math.sqrt((x2-x1)**2)+((y2 - y1)**2) print(distance)

Output:

1(c). Distance between two points

Result: Thus the python programs to calculate distance between two points have been done successfully and the output is verified.

EX NO : 02 Scientific problems using Conditionals and Iterative loops Date :

2(a).Conditionals Aim: To develop a program for checking whether the given number is an even number (or) add numbers.

Algorithm: Step 1: Start the program. Step 2: Declare the variables num and read the input for using input function. Step 3: If num%2==0 then print the number is even. Step 4: Else print the number is add. Step 5: Stop the program.

Flowchart:

Condition

Code inside Else body

Condition

Code inside If body

Program: num = int(input("Enter a number :")) X = num if(num % 2) == 0: print("You are value is even", num) else: print("You are value is odd", num)

Output:

2(a). Conditionals

Result: Thus the python programs to find add or even using conditionals has been executed successfully.

2(a). Iterative loops Aim: To develop a program for calculate sum of series using python.

Algorithm: Step 1: Start the program. Step 2: Take a two points as an input from a user. Step 3: Initiate a variable s=0, i=0. Step 4: While the value of i is less than or equal to n, repeat the instructions in step 5 and step 6. Step 5: s=s+x**I and i=i+1. Step 6: Print a sum of series. Step 7: Stop the program.

Flowchart: Start

Body of loop

If condition is TRUE

Condition

If condition is FALSE Stop

Program: x = int(input("enter the value of x : ")) n = int(input("enter the value of n : ")) s = 0 i = 0 while(i arr[j]: prev = j arr[i], arr[prev] = arr[prev], arr[i] print("\nSorted list :") for i in range(len(arr)): print("%d" % arr[i], end=" ")

Output:

4(a). Selection sort

Result: Thus the python programs to sort an element in a list using selection sort has been executed successfully.

4(a).Insertion sort Aim: Write a program to sort an element in a list using insertion sort concept in python.

Algorithm: Step 1: Start the program. Step 2: Initialize the list. Step 3: Print a given list using loop. Step 4: Declare a function with one parameter. Step 5: Initiate a loop for i in range of 1 and length of list. Step 6: Declare a two variable.  key = arr[i]  j = i-j Step 7: While the value of j is greater than or equal to 0 and key less than arr[j] repeat the instructions arr[j + 1] = arr[j]. Step 8: Print a sorted list using loop. Step 9: Stop the program.

Program: def insertionSort(arr): for i in range(1, len(arr)): key = arr[i] j = i-1 while j >= 0 and key < arr[j]: arr[j + 1] = arr[j] j -= 1 arr[j + 1] = key arr = [12, 11, 13, 5, 6]

print("Given List :") for i in range(len(arr)): print("%d" % arr[i], end=" ") insertionSort(arr) print("\nSorted List :") for i in range(len(arr)): print("% d" % arr[i])

Output:

4(b). Insertion sort

Result: Thus the python programs to sort an element in a list using selection sort has been executed successfully....