Python программалоо тили англис тилинде

Class work

5/1/20

Subject: Introduction to programming language, Python

Plan:

[ Algorithm, Program language, Code. ] H/W

Simple arithmetic operators: +, -, /, *.

Order of operations and parenthesis.

Variables and data types. Data input and output.

Use comments.

Algorithm

An is a list of rules to follow in order to solve a problem.

The term algorithm itself derives from the 9th Century mathematician Musá Al-Khuwarizmi, Latinized 'Algoritmi'

For example:

Imagine that you need to show someone how you brush your teeth so they can learn how to do it themselves.

The instructions would go like this:

1 Open the toothpaste

2 Put a bit of toothpaste on the toothbrush

3 Open your mouth

4 Brush your teeth nicely

5 Rinse your mouth with water

6 Smile

my daily plan, time-table, …

Ways to representing algorithm

• Verbal - explain with words
• Flowchart - Chart or diagram
• Pseudo code - using special symbols
• Program - execute on a compute, need to know the programming language

Examples of Prog. Languages Basic, Fortran, C++, Delphi, Pascal, Python

used for creating

high-level programming language

Web applications

Dynamic Web content

custom plug-ins

…

designed to be easy to read and simple to implement.

Extension of program .py

The print() function prints the given object to the standard output device

print( arguments)

Variables (a, b, …)

String (“text”)

Value (number)

# 1st program

print("Hello 9 grades")

print (55) # output 55

print ( 5+5)

print(a)

program

output

# 1st program

Hello 9 grades

print("Hello 9 grades")

10

print (5+5) # output 10

Good bye

print (“Good bye”, )

Comments in Python

Hash (#) character, single-line comments are created simply by beginning a line

Creating Variables

A variable is created the moment you first assign a value to it.

Variables:

Output:

x=5 – number

5

Y=“John” - String (text)

John

Variable Names

A variable can have a short name (like x and y) or a more descriptive name (age, name, ICT total_volume). Rules for Python variables:

A variable name must start with a letter or the underscore character

A variable name cannot start with a number

A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )

Variable names are case-sensitive (age, Age and AGE are three different variables)

Fill yourself, (testing variables)

Write output

Output

Python input() Function

The input() function allows user input.

Syntax

input(prompt)

Write Python code here