Python for loop
- 2. Quick revision What is a list? Difference between list and a variable Can list store data of multiple types? What is used to iterate over a list? How to calculate length of list? Are strings stored as lists in python?
- 3. What is for loop??? The for loop in Python is used to iterate over a sequence (list, tuple, string) or other iterable objects. Iterating over a sequence is called traversal.
- 4. 2 types of writing for loops 1.Getting each element of the sequence 2.Range (): By generating range of numbers and use these numbers as indexes to access sequences.
- 5. Lets dive in type 1 of for loop
- 6. Syntax of for loop
- 7. Example
- 8. Flowchart of for loop
- 10. Example 2:For loop to calculate sum of elements in a list
- 11. The break statement Exit the loop when x is "banana", but this time the break comes before the print:
- 12. Continue keyword With the continue statement we can stop the current iteration of the loop, and continue with the next:
- 13. Type 2 of for loop
- 14. The range() function We can generate a sequence of numbers using range() function. range(10) will generate numbers from 0 to 9 (10 numbers). We can also define the start, stop and step size as range(start,stop,step size). step size defaults to 1 if not provided. To force this function to output all the items, we can use the function list().
- 15. Example
- 16. Example to use range() in for loop
- 17. Syntax : range(start index, end index, step size)
- 18. Sample problems Print elements of a 1 dimensional list. Print elements of 2 dimensional list. Print even elements in a list.
- 19. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. It makes use of the works of Mateus Machado Luna.