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Term 1	Term 2	Term 3	Term 4
Unit 11.1А: Python programming Basics Introduction to the python programming language. Input and output of data Programmimg of branching algorithms Programming of loops	Unit 11.2A: 11.2А Data structures in Python Data structures: Sets Data structures: Strings	Unit 11.3А: Data structures in Python (continuation) Data structures: Lists and Tuples Data structures: Nested lists Data structures: Dictionaries	Unit 11.4A: 11.4A Object-oriented programming Object-oriented programming: User-defined functions Object-oriented programming: Classes Object-oriented programming: Tkinter

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INTRODUCTION TO THE PYTHON PROGRAMMING LANGUAGE�OUTPUT OF DATA

11.1А PYTHON PROGRAMMING BASICS

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Learning objectives:

11.1.1.1 arrange data output;

11.1.1.2 use escape sequences in data output;

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Expected outcomes

Students will:

organize data output;
use escape sequences when outputting data;
explain the difference in writing basic Python statements with other programming languages previously learned.

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Video overview of the �Python programming language

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What is Python?�

Python is a popular programming language. It was created by Guido van Rossum, and released in 1991.

It is used for:

- web development (server-side),

- software development,

- mathematics,

- system scripting.

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What can Python do?

Python can be used on a server to create web applications.
Python can be used alongside software to create workflows.
Python can connect to database systems. It can also read and modify files.
Python can be used to handle big data and perform complex mathematics.
Python can be used for rapid prototyping, or for production-ready software development.

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Why Python?

Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
Python has a simple syntax similar to the English language.
Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
Python can be treated in a procedural way, an object-oriented way or a functional way.

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Python Syntax compared to other programming languages

Python was designed for readability, and has some similarities to the English language with influence from mathematics.

Python uses new lines to complete a command, as opposed to other programming languages which often use semicolons or parentheses.

Python relies on indentation, using whitespace, to define scope; such as the scope of loops, functions and classes. Other programming languages often use curly-brackets for this purpose.

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Comparison

Determine what happens when outputting the next line

Consider a program to greet the user in various programming languages

Which programming language is easier to understand?
What language will be written faster than others?

С++	Python
#include <iostream> using namespace std; int main() { string username; cout << "What is your name? \n"; cin >> username; cout << "Hello, " << username << "!"; }	print(‘What is your name?’) username = input() print(‘Hello, ’, username, ‘!’)

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Discussion 5 min

Discuss the advantages and disadvantages of Python and list them below.

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Online python interpreter

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Output

For standard output, Python uses the print command.

Note that you can use either double quotes or apostrophes when outputting strings.

Example:

print("Hello, world!") # correct

print('Hello, world!') # correct

print("Hello, world!') # incorrect

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The “sep” and “end” parameters

print("text1", "text2", "text3") # output has three arguments.

Result:

text1 text2 text3

Use of sep parameter (separator – разделитель)

print("text1", "text2", "text3", sep="---")

Result:

text1---text2---text3

Use of end parameter

print("text1", end=" ")

print("text2", end=" ")

print("text3")

Результат:

text1 text2 text3

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Python Comments

Comments starts with a #, and Python will ignore them:

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Python Escape Characters

To insert characters that are illegal in a string, use an escape character.

An escape character is a backslash \ followed by the character you want to insert.

An example of an illegal character is a double quote inside a string that is surrounded by double quotes:

To fix this problem, use the escape character \":

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Other escape characters used in Python:

Code	Result
\'	Single Quote
\\	Backslash
\n	New Line
\r	Carriage Return
\t	Tab

Full examples

https://www.python-ds.com/python-3-escape-sequences

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Examples

print("text1\ntext2")

result:

text1

text2

print(“Carrot\t150 tenge\nPotato\t180 tenge")

result:

Carrot 150 tenge

Potato 180 tenge

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Determine what happens when outputting the next lines:

print('line 1\nline 2\nline 3')

print('This is a backslash: \\')

print('Don\t worry be happy!’)

print(5 + 3)

print(11 – 7)

print(‘10 * 5’)

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Write a Python program to print the following string in a specific format

15:00 movie "Avengers"

16:30 show "The Tonight Show Starring Jimmy Fallon"