Beginners introduction to Python and Raspberry Pi programming. More details on http://raspberrypyrates.wordpress.com

1. Welcome
Avilay Parekh
Anika Parekh
@avilay

2. Sequential
Execution
Variables
Conditionals
Loops
Module 2

3. Game Time
Robots were not able to make
decisions for themselves
Had to give them very precise
instructions
Source: http://www.raspberrypi.org/learning/turing-test-lessons/Lesson-1/lesson-plan-1.md

4. Program Code
Execute statements in sequence
Control flow
Statement that is currently executing
Statement that is next
Source: http://www.raspberrypi.org/learning/turing-test-lessons/Lesson-1/lesson-plan-1.md

5. Turtle Program
Draw a rectangle, triangle, “s” shape
Students to draw a square
>>> import turtle
>>> turtle.forward(0)

6. Dragon Game
Demo the full game.
Source: http://inventwithpython.com/chapter6.html

7. Dragon Game - Intro
print(“You are in a land full of dragons.”)
print(“In front of you, you see two caves.”)
print(“In one cave, lives a good dragon ”)
print(“who will share his treasure with you.”)
print(“In the other lives a bad dragon ”)
print(“who will eat you on sight!”)
print()

8. Variables
a = 10
b = 5
c = a + b
print(c)

9. Variables
a
10
b
5
c
15
a = 10
b = 5
c = a + b

10. Variables
a
20
b
5
c
15
a = 20
b = 5
c = a - b

11. Variables
a = 20
b = 5
c = a – b
print(a)
a = 100
print(a)

12. Variables
import random
a = 20
b = 5
c = a – b
print(a)
a = random.randint(1, 10)
print(a)

13. Strings
a
“hello”
b
“world”
c
“helloworld”
a = “hello”
b = “world”
c = a + b

14. Strings
a
“hello”
b
“world”
c
“hello world”
a = “hello”
b = “world”
c = a + “ ” + b

15. Strings can be concatenated
name = “Avilay”
profession = “programmer”
print(name + “ is a ” + profession)

16. Datatypes cannot be mixed
age = 30
print(name + “is” + age + “years old”)
Ka-Boom!!

17. Datatypes cannot be mixed
age = 30
print(name + “is” + str(age) + “years
old”)
Convert the number to a string using the str
function

18. Datatypes cannot be mixed
age = “30”
print(name + “ is ” + age + “ years old ”)
Or just declare the variable age as a string.

19. Datatypes cannot be mixed
your_age = input(“Your age?”)
my_age = 30
older_by = my_age – your_age
Ka-Boom!!

20. Datatypes cannot be mixed
your_age = int(input(“Your age?”))
my_age = 30
older_by = my_age – your_age
input function always returns a string. Convert
it to a number using the int (for integer)
function.