The document discusses flow charts and provides examples of flow charts for simple algorithms. Some key points: - A flow chart represents an algorithm using a diagram to show the logic and flow of a program. - An example flow chart is provided that takes two numbers as input, adds them, and prints the output. - Basic flow chart symbols are described like start/stop, processing, input/output, and conditional decision blocks. - An exercise asks the reader to create a flow chart that takes three numbers as input and finds the maximum value. - Looping structures are discussed and an example flow chart is given to print even numbers from a list.

1. Python with AI – I
Flow Chart

2. What are flow charts
• A flow chart represents the algorithm using a diagram
• Creating a flow chart helps design the logic of the program

3. Example – Add two numbers given by a user

4. Example – Add two numbers given by a user
Start
Accept first
input: num1

5. Example – Add two numbers given by a user
Start
Accept first
input: num1
Accept second
input: num2

6. Example – Add two numbers given by a user
Start
Accept first
input: num1
Accept second
input: num2
Sum = num1 + num2

7. Example – Add two numbers given by a user
Start
Accept first
input: num1
Accept second
input: num2
Add = num1 + num2
Print Add
Stop

8. Example – Add two numbers given by a user
Start
Accept first
input: num1
Accept first
input: num2
Add = num1 + num2
Print Add
Stop

9. Example – Add two numbers given by a user
Start
Accept first
input: num1
Accept first
input: num2
Add = num1 + num2
Print Add
Stop

10. Basic flow chart symbols
Symbol Purpose Description
Flow line Indicated the flow from one block
to another
Start/Stop Represents the start and end of the
flow chart
Processing Arithmetic operations
Input/Output Input and output operations
Conditional Decision making block

11. Example – Print the maximum between two
numbers Start
Accept first
number: num1
Accept second
number: num2
as input
Print num1
Stop
If
num1>
num2
Print num2
True False

12. Example – Print the maximum between two
numbers Start
Accept first
number: num1
Accept second
number: num2
as input
Print num1
Stop
If
num1>
num2
Print num2
True False
Verify that the flow chart
works correctly for a few
examples
num1 = 10, num2 = 20
num1 = 15, num2 = 5

13. Exercise: Create a flow chart for this problem
• Given 3 numbers, a, b, c, find the maximum value

14. Exercise: Create a flow chart for this problem
• Given 3 numbers, a, b, c, find the maximum value
• Verify that what your flow chart works correctly
• Examples:
• a = 10, b = 20, c = 30
• a = 15, b = 30, c = 5
• a = 40, b =80, c = 120

15. Exercise: Create code
Start
Declare 3
numbers: a, b, c
If a > b
Print b
FalseTrue
If a > c
Print a
If b > cPrint c
Stop
True True
False False

16. Loops in flow chart
• Given a list list_sample = [4, 3, 2, 5, 8], print all the even numbers

17. Loops in flow chart
Start
Declare list_sample [4, 3, 2, 5, 8]
Declare a variable len_list that stored the length of the list

18. Loops in flow chart
Start
Declare list_sample [4, 3, 2, 5, 8]
Declare a variable len_list that stored the length of the list

19. Loops in flow chart
Start
Declare list_sample [4, 3, 2, 5, 8]
Declare a number a=0
Declare a variable len_list that stores the length of the list
If a >
len_list
Stop a = a+1
value =
list_sample[a]
If value is
a even
number
Print value
True False
False True

20. Loops in flow chart
• Given a list list_sample = [4, 3, 2, 5, 8], print all the even numbers

21. Loops in flow chart - while
• Given a list list_sample = [4, 3, 2, 5, 8], print all the even numbers

22. Loops in flow chart - while
• Given a list list_sample = [4, 3, 2, 5, 8], print all the even numbers
Declare a number a=0
If a >
len_list
Stop a = a+1
value =
list_sample[a]
If value is
a even
number
Print value
True False
False True

23. Exercise: Design a chat bot - flowchart
• list_happy_words = [“joyful”, “happy”, “amazing”, “beautiful”]
• list_sad_words = [“sad”, “tears”, “crying”, “depressed”]
• list_games = [“tetris”, “flappy bird”, “snake”]
• Ask the user to enter a word that describes their feeling
• If the feeling they enter is one of the list_happy_words, print “Glad you are
happy” and exit.
• If the feeling they enter is one of the list_sad_words, ask the user to play
one of the games from the list list_games.
• Ask the user again how they are feeling and continue till the list of games is
exhausted.
• If you already suggested all the games and the user is still unhappy, exit.

24. Exercise: Design a chat bot - code
Start
Declare the 3 lists
Ask the user to input a word describing their feeling, save the string
Check if
word is a
part of
happy list
Check if
word is a
part of
sad list
True
Stop
Print
sentence
False
False True
Print
sentence
Print
game

25. Exercise: Design a chat bot - code
Start
Declare the 3 lists
Ask the user to input a word describing their feeling, save the string
Check if
word is a
part of
happy list
Check if
word is a
part of
sad list
True
Stop
Print
sentence
False
False True
Print
sentence
Print
game
Check if
your
games
list is
over
False

26. Lets try it!
http://aiclub.world