1. Design & Technology Grade 7 Python
Python Introduction

2. Input Date Processing Out Put Information Program Editor Compiler
Problem
Programmer
Algorithm
flowchart
Program
Editor
Compiler
Real Program
Run
Input
Date
Processing
Out Put
Information

3. Python is a programming Language Python = Program (Script ) is list of instructions or statements Statement = Syntax (Format ) Syntax = Spelling & Grammar

4. Displaying String Output
String output: A message appears onscreen that consists of a series of text characters. Print statement ( syntax ) Format: print ("the message that you wish to appear")

5. Print (“I love “ + “ Python “)
The Print Statement
To Display output
Print ( constant )
Print (“ string “ )
Print (Expression )
Print ( Mixed )
Print ( variable )
Print (5)
Print (“Python”)
Print ( 5+6)
Print (“I love “ + “ Python “)
Print (5, “ICT”,1+2)

6. Arithmetic Operators Operator Description Example = Assignment num = 7+
Addition
num = 2 + 2 -
Subtraction
num = 6 - 4 *
Multiplication
num = 5 * 4 /
Division
num = 25 / 5 %
Modulo
num = 8 % 3 **
Exponent
num = 9 ** 2
num = 9//2
divide //

7. Parenthesis ( ) Power ** Multiplication * , / Addition + , -
Order Of Operation
Parenthesis ( )
Power **
Multiplication * , /
Addition , -
Left to Right

8. Variables Format: Examples: Num = 5 X =2.3 Firstname = “Basma”
<name of variable> = <Information to be stored in the variable>
Examples:
Num = 5
X =2.3
Firstname = “Basma”

9. Variables Naming Must start with a letter Case Sensitive
Can’t be Python Key word
Prefer
Meaningful
capitalizing the first letter of each word

10. Variables Naming Myage = 5 FirstName =“Basma” HourWork=8
RateperHour=50
Side_Squar=10

11. Input Statement
The computer program getting string information from the user.
Strings cannot be used for calculations (information getting numeric input will provided shortly).
Format:
<variable name> = input("<Prompting message>")
Example:
name = input ("What is your name: ")
Print ( name )

12. Converting Between Different Types Of Information (2)
Example motivation: you may want numerical information to be stored as a string (for the formatting capabilities) but also you want that same information in numerical form (in order to perform calculations).
Some of the conversion mechanisms available in Python:
Format:
int (<value to convert>)
float (<value to convert>)
str (<value to convert>)
Examples:
Program name: convert1.py
x = 10.9
y = int (x)
print (x, y)