Core Concept_Python.pptx

It describe about core concept in python.

1. Marathwada Mitramandal’s COLLEGE OF ENGINEERING Karvenagar , Pune Accredited with ‘A++’ Grade by NAAC Presentation On Core Concepts In Python By Mrs. Ashwini Raut Department of Computer Engineering

2. Agenda

3. Variables in Python

4. Get The Type of variables You can get the data type of a variable with the  type()  function. E.g : x = 5 y = "John” z= 5.5 print(type(x)) print(type(y)) print(type(z)) Output: <class 'int’> <class 'str’> <class ‘float'> <class 'str'>

5. Keywords Python has a set of keywords that are reserved words that cannot be used as variable names, function names, or any other identifiers: There are 35 keywords in python 3.13 version import keyword print("Python keywords are...") print( keyword.kwlist )

6. Data Types in Python It’s the type of data particular variable is holding. E.g : int,float .

7. Data types in python

8. Example of Numeric Data Type a =20 b=20.5 c=3+4j print(type(a)) print(type(b)) print(type(c)) Output : <class 'int’> <class 'float’> <class 'complex'>

9. String Strings in python are surrounded by either single quotation marks, or double quotation marks. 'hello'  is the same as  "hello“ E.g : print ( "Hello" ) print ( 'Hello’ ) Output: Hello Hello

10. Accessing Characters String W e will define a string in Python and access its characters using positive and negative indexing. The 0th element will be the first character of the string whereas the -1th element is the last character of the string.

11. Example String1 = "Hello" print("Initial String: ") print(String1) print("\ nFirst character of String is: ") print(String1[0]) print("\ nLast character of String is: ") print(String1[-1]) Output: Initial String: Hello First character of String is: H Last character of String is: O

12. List Lists are used to store multiple items in a single variable. Lists are created using square brackets: E.g : thislist = ["apple", "banana", "cherry"] print( thislist ) Output : [‘apple’, ’banana’, ’cherry’] ', 'cherry']

13. Tuple Tuples are used to store multiple items in a single variable. A tuple is a collection which is ordered and unchangeable. Tuples are written with round brackets. E.g : thistup = ("apple", "banana", "cherry“) print( thistup ) Output : ( ‘apple’, ’banana’, ’cherry’) , 'banana', 'cherry']

14. Dictionary Dictionaries are used to store data values in key:value pairs. ‘ thisdict =   {    "brand" :  "Ford" ,    "model" :  "Mustang" ,    "year" :  1964 } print ( thisdict ) Output: ‘ {"brand": " Ford","model ": "Mustang",  "year": 1964} {'brand': 'Ford', 'model': 'Mustang', 'year': 1964} c {'brand': 'Ford', 'model': 'Mustang', 'year': 1964} herry ']

15. Comments in Python Comments can be used to explain Python code. Comments can be used to make the code more readable. Comments can be used to prevent execution when testing code

16. Single Line Comment Single line comment is starts with # E.g : #Program to print hello world print(“Hello World!!”) Output: Hello World!!

17. Multiline Comment Multiline comments are enclosed with   triple quotes (“””) as multiline comments. E.g : “””Python Program to demonstrate multiline comment””” print(“Hello World”) Output: Hello World

18. Basic Python program 1.Write a program in python to perform addition of two numbers. num1 = 10 num2 =20 sum= num1+num2 print(“Addition of two numbers are  ”,sum) Output: Addition of two numbers are  30

19. Basic Python program 2.Write a program in python to perform subtraction of two numbers. num1 = 30 num2 =20 sub= num1-num2 print(“Subtraction of two numbers are  ”,sub) Output: Subtraction of two numbers are  10

20. Basic Python program 3.Write a program in python to perform multiplication of two numbers. num1 = 10 num2 =20 mult = num1*num2 print(“Multiplication of two numbers are  ”, mult ) Output: Multiplication of two numbers are  200

21. Basic Python program 4.Write a program in python to perform division of two numbers. num1 = 20 num2 =10 div= num1/num2 print(“Division of two numbers are  ”,div) Output: Division of two numbers are  2

22. Basic Python program Write a program to perform addition of two numbers (take numbers from users) num1 = int(input(“Please enter value for num1  ”)) num2 = int(input(“Please enter value for num2  ”)) sum = num1 + num2 print(“The sum of two numbers  ”, sum) Output : Please enter value for num1 10 Please enter value for num2 90 The sum of two numbers 100