Python Loops Tutorial | Python For Loop | While Loop Python | Python Training | Edureka
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This document discusses loops in Python. It begins by explaining why loops are useful, such as for payroll processing to calculate salaries and bonuses for multiple employees. It then defines loops as allowing code to execute repeatedly based on conditional statements. The document outlines the main types of loops in Python - while loops, for loops, and nested loops. While loops iterate until a condition is false, for loops iterate a specified number of times, and nested loops involve loops within other loops. Examples are provided for each loop type, such as a guessing game to demonstrate a while loop and calculating factorials with a for loop.
Python Loops Tutorial | Python For Loop | While Loop Python | Python Training | Edureka
- 1. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Python Loops
- 2. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Agenda ➢ Why to use loops ➢ What are loops ➢ Types of loops in Python ▪ While ▪ For ▪ Nested ➢ Summary
- 3. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Why To Use Loops?
- 4. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Why To Use Loops If a software developer develops a software module for payroll processing that needs to compute the salaries and the bonus of all the employees. Software module for payroll processing Salary Bonus Total Employee - 1 Employee - 2 Employee - 3
- 5. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Why To Use Loops Manual Loops Employee-1: Salary Bonus Total Employee-2: Salary Bonus Total Employee-3: Salary Bonus Total Start Logic to calculate the total salary Employee-1: Salary Bonus Total Start Logic to calculate salary of Employee-1 Employee-2: Salary Bonus Total Start Logic to calculate salary of Employee-2 Employee-3: Salary Bonus Total Start Logic to calculate salary of Employee-3
- 6. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING What are Loops?
- 7. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING What Are Loops Loops allows the execution of a statement or a group of statement multiple times. In order to enter the loop there are certain conditions defined in the beginning. Once the condition becomes false the loop stops and the control moves out of the loop. Start Conditional Code Condition If condition is false If condition is true Exit Loops FiniteInfinite
- 8. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Loops In Python
- 9. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING While Loop While loops are known as indefinite or conditional loops. They will keep iterating until certain conditions are met. There is no guarantee ahead of time regarding how many times the loop will iterate. Syntax: Start While Condition? Body of the loop True False Exit While For Nested
- 10. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING While Loop Example A little guessing game Let the correct answer be 13 Input Number: 10 Number is too small Input Number: 15 Number is too large Input Number: 13 Exit: Congratulations. You made it! While For Nested
- 11. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING For Loop For loop is a Python loop which repeats a group of statements a specified number of times. The for loop provides a syntax where the following information is provided: Boolean condition The initial value of the counting variable Incrementation of counting variable Start Execute Statement (s) End Next item from sequence If no more items in the sequence Item from sequence While For Nested
- 12. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING For Loop Example Lets find factorial Notice we know the number of iterations so for loop is a better option 3! = 3(2)(1) 4! = 4(3)(2)(1) 5! = 5(4)(3)(2)(1) Example Factorial = n(n-1)(n-2)…..1 n n-1 n-2 1 While For Nested
- 13. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Nested Loops Python programming language allows use of loop inside another loop. This is called Nested Loop. below is the syntax for the same: Syntax: Syntax: While For Nested
- 14. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Nested Loop Example Lets code a program in Python that effectively simulates a bank ATM. Enter the 4-digit pin Make a withdrawal Pay in Check balance Return card While For Nested
- 15. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Nested Loop Example Lets write a code to print the Pythagorean numbers. Three integers satisfying a2+b2=c2 are called Pythagorean numbers c2a2 b2 3 4 5 5 12 13 6 8 10 8 15 17 9 12 15 12 16 20 Enter the maximum number: 20 Pythagorean numbers between 1-20 While For Nested
- 16. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Nested Loop Example While For Nested Bulk reservation: Name: Age: Sex: Using a for loop inside while loop
- 17. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Agenda Why loops What are loops While loop For loop Types of loops Nested loop
- 18. www.edureka.co/pythonEDUREKA PYTHON CERTIFICATION TRAINING Thank You … Questions/Queries/Feedback