Python_Chapter 1.pptx python basics very important for beginners

Python basics

1. Module-I Basics of Problem Solving Mrs. Leena Patil

2. Basics of Problem Solving Problem solving involves understanding a problem, identifying potential solutions, and selecting the best one. It is a critical skill in various fields like mathematics, science, and real life. Problem-solving requires logical thinking, creativity, and decision-making .

3. General Problem-Solving Concepts Identify the Problem : Clearly understand what needs to be solved. Analyze the Problem : Gather relevant information and constraints. Generate Possible Solutions : Brainstorm different approaches. Select the Best Solution : Choose the most effective option. Implement the Solution : Apply the selected solution. Evaluate the Outcome : Check if the solution worked, and revise if needed.

4. Types of Proble ms Well-Defined Problems: Clear goals, defined solutions (e.g., math problems). Ill-Defined Problems: Ambiguous goals, multiple possible solutions (e.g., real-life decisions). Simple Problems: Can be solved using straightforward methods. Complex Problems: Require detailed analysis and advanced strategies.

5. Introduction to Program Design Tools Program design tools help in planning and representing the logic of a program before actual coding. Common tools include : Algorithm Pseudocode Flowchart

6. Algorithm An algorithm is a step-by-step procedure to solve a specific problem. Features of an Algorithm: Finite steps Clear and unambiguous Well-defined inputs and outputs Example: Algorithm for adding two numbers : Start Input two numbers A and B Sum ← A + B Print Sum Stop

7. Pseudocode Pseudocode is an informal, high-level representation of an algorithm using structured language. Characteristics of Pseudocode: Easy to read and understand Resembles programming language Focuses on logic rather than syntax Example: Pseudocode for adding two numbers : START INPUT A, B Sum ← A + B PRINT Sum END

8. Flowchart A flowchart is a graphical representation of an algorithm using symbols.

9. Example

10. Advantages of Design Tools Helps in planning the program logic before coding. Makes it easier to identify errors in the logic. Improves communication among team members. Provides a clear structure for complex programs.

11. Examples to solve Write Algorithm, pseudo code and draw a flowchart to solve following problem statements for adding the integers from 1 to 100 and to print the sum. find the factorial of a given number N calculate the perimeter and area of rectangle. Given its length and width . find out the biggest of the three unequal positive numbers .