PYTHON 203

PYTHON 203

DR Farzana Rahman​

Python Introduction

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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Python USE

• 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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Python language compared to other programming languages

• Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc) and 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.

• 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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Multiple Choice

How python syntax defines a scope

• using indication

• using semicolon

• using bracket

• using colon

PYTHON WITH GOOGLE COLAB

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PYTHON SYNTAX​

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Multiple Choice

Which sign python uses to complete a command ?

• semicolon

• parentheses

• colon

• new line

COMMETS

• Comments starts with a #, and Python will ignore them.

• Python does not really have a syntax for multi line comments.

• To add a multiline comment you could insert a # for each line​.

• ​Since Python will ignore string literals that are not assigned to a variable, you can add a multiline string (triple quotes) in your code, and place your comment inside it (CHECK EXAMPLE)

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Multiple Choice

What is the Python syntax for multiline comment?

• #

• ##

• //

• No Syntax

Multiple Choice

Select the correct answer

• A variable is created the moment you declare the type

• Variables are needed to be declared with particular type

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

• Python has specific command for declaring a variable.

Multiple Choice

Which Variable name is right?

• 7myclass

• my_class

• my-class

• my class

Multiple Choice

The most common python output function is-

• printf()

• print()

• cout()

• cin()

Multiple Choice

In a python code global variable can be used -

• inside a function

• outside a function

• in a specific function

• both inside and outside of a function

Multiple Select

Select the built in data types of python? You can choose multiple answers

• integer

• float

• character

• complex

Multiple Select

Which one are right syntax to define string data type in python? You can choose multiple answers

• x="Hello"

• x=["Hello"]

• x='Hello'

• x={Hello}

Multiple Choice

X="HELLO_PYTHON"

print(x[3:8]) command outputs

• LLO_PY

• LO_PY

• LO_PYT

• O_PYT

Multiple Choice

x = "Hellopython"

print(x[:5]) output is

• Hello

• ellop

• Hellop

• ellopy

Multiple Choice

x = "Hipython"

print(x[3:]) outputs

• python

• ython

• thon

• ipython

Multiple Choice

x = "Hello_Students!"

print(b[-8:-2]) outputs

• tudents!

• tudents

• student

• tudent

List, Tuple, SET,Dictionary

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Multiple Select

(You can choose multiple answer)

Properties of LIST-

• Ordered

• Changeable

• accept duplicates

• unchangable

Multiple Choice

How can we Add item in specific location of a List

• using add() function

• using append() function

• Using insert() function

Multiple Select

You can choose multiple answer)

Properties of TUPLE-

• Ordered

• Changeable

• accept duplicates

• unchangable

Multiple Choice

HOw can we add element in a Tuple

• using append () function

• changing tuple to list

• using insert() function

• using update() function

Multiple Select

(You can choose multiple answer)

Properties of SET-

• Ordered

• Changeable

• accept duplicate

• unchangable

Multiple Select

(you can choose multiple Answers)

How can we add elements in set

• add() function

• append() function

• update() function

• insert() function

Multiple Choice

Which one is true

• we can add and remove item from sets

• We can add and remove item from tuple

• We cannot have duplicate item in list

• Set items are ordered and indexed

Multiple Choice

Which one is immutable

• List

• Tuple

• SET

• both List and Tuple

Multiple Select

(You can choose multiple answer)

Properties of Dictionary-

• Ordered

• Changeable

• accept duplicate

• unchangable

Multiple Select

which method are used to access keys in dictionary

[you can select multiple answer]

• get()

• keys()

• find()

• in()

Multiple Select

What update method can do

[you can select multiple answer]

• update value

• update keys

• update dictionary

• add new value

Class

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Multiple Choice

What keyword is used to define class?

• myclass

• newclass

• class

• makeclass

Multiple Choice

How to define a class?

• Class Classname:

  attributes

• Class: Classnane

  attributes

• Classname Class:

  attributes

Multiple Choice

How to initialise attribute information in Class

• using define function

• using

  __init__

  function

• using

  new function

• using

  attribute function

Multiple Choice

What is reference variable ?

• A variable that is used to access attributes of the class

• A variable that is used to access variables that belong to the class

• A variable that is used to call class function

• both 1st and 2nd choice.