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Python Essentials II�Module 2 - 2.3.1.1 ~ 2.3.1.10

Cisco Networking Academy Introduction

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Licensing & Attribution

Open Source Philosophy - I have come to realize that I’m really not competing with other teachers. Maybe I have some local competition, but in reality, if a student is not coming to my class or my school, then I’m not competing with other teachers in any way… If you work more than a District away, then we really are not competitors. Let's Share... Collaborate... Help each other... I, and you, may have sweat blood and tears developing a lesson plan, a lab, or presentation… There is an ENORMOUS unpaid value there… I get that… I don’t begrudge teachers who are trying to sell their collateral… I’m just saying that is not what I’m going to do. But that is my plan. I’m going to share virtually everything I develop. Join Me!!! See More

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GNU Public License & EUPL (European Union Public Licence)

Any included or linked Programming Code Is licensed under GNU General Public License v3.0 & and / or licensed under EUPL 1.2 or later

See the Appendix for Additional Licensing & Attribution Information

Please maintain this slide with any

modifications you make

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Resources & Materials Needed

PC, Laptop or Other device to access sites & applications specified by your Instructor
Access to the Cisco Networking Academy �Python Esentials class

https://lms.netacad.com/course/

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👉 Try This:

Browser: You can use a web based Browser IDE like Replit.com, PythonTutor or Trinket.
Installed Python IDLE: If you installed Python open an IDLE window

print("Hisssssssssss")

Try This 👉

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Sections Covered In This Lesson

2.3.1.1 Operators- data manipulation tools
2.3.1.2 Arithmetic operators: exponentiation
2.3.1.3 Multiplication and Division
2.3.1.4 Integer division
2.3.1.5 Remainder (modulo)
2.3.1.6 Addition; Subtraction/unary/binary
2.3.1.7 Operator priorities and their bindings
2.3.1.8 Operators, bindings: exponentiation
2.3.1.9 List of priorities;operators,parentheses

Try This 👉

Work all the code examples in the sections

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Key Concepts & Topics...

Python as a calculator

operator is a symbol of programming language that operates on values, e.g. add or +
expressions are formed with data and operators

Exponentiation: base ** exponent

when both arguments are integers, result is int
when at least one argument is a float, result is flt

Arithmetic: *, mult; /, divide (result is a float)
Integer divide: //

e.g. print (-6//4) and print (6.0//-4) will yield -2 and -2.0 (because the real result is -1.5 rounded to -2 or -2.0)
Integer divide is also called floor division

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Key Concepts & Topics...

Remainder (modulo): %, remainder left after the integer division

Ex1. print (14%4), yields 2 because

14//4 is 3, the integer quotient
3*4 is 12, quotient x divisor
14-12 is 2, the remainder

Ex2. print (12%4.5), yields 3.0 because

12//4.5 is 2.0, the float after an integer divide
2.0*4.5 is 9.0, quotient x divisor
12-9.0 is 3.0, the remainder

Division by zero does not work

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Key Concepts & Topics...

List of Priorities�

Priority	Operator
1	+, -	unary
2	**	unary
3	*, /, //, %	unary
4	+, -	binary

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Your Take-Away From These Sections

Expression is a combination of values (or variable, operators, function calls. e.g. 1+2
Operators are special symbols or keywords that operate on values. e.g. x*y
Arithmetic operators in Python:

+ (add), - (subtract), * (multiplication), / (division, returns as float)
% (special symbol for modulus divide, left operand divided by right operand and returns remainder, e.g. 5 % 2=1)
** (exponentiation)
// (floor/integer- rounded down. e.g. 3//2.0=1.0)

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Your Take-Away From These Sections

Unary operator has one operand, e.g. -1 or +3
Binary operator has two operands, e.g. 4+5
Hierarchy of priorities

unary + and - have highest
then: **, then: *, / and %, and lowest priority: binary + and -

Subexpressions in parentheses are calculated first, e.g. 15-1*(5*(1+2))=0
Exponentiation operators uses right-sided binding, e.g. 2**2**3=256

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Can You Answer These Questions?

print(9 % 6 % 2)
print(2 * 3%5)
print((5*((2513)+100)/(2*13))//2)

Dig Deeper

"Mastery" means you can describe why these topics and concepts are important. Can you explain and discuss these ideas? As you read and work the code examples pay special attention to these ideas.

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Thank You…

Questions?

If you are in one of my classes, you can probably send / post questions in:

STEAM Clown’s Homepage (look at "Units")
Link from my Mechatronics Engineering Google Sites Page

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Reference Slides

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Education Standards

California's 2013 CTE Standards
Next Generation Science Standards
California Math Common Core Standards
California English Common Core Standards
California History-Social Science Standards
California English Language Development Standards
Next Generation Science Standards (1)
California's 2013 CTE Standards (2)
Related Instructional Objectives (SWBAT...)

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Quiz Answers

print (9 % 6 % 2)��Answer: 1�
print (2 * 3%5)��Answer: 1�
print ((5*((2513)+100)/(2*13))//2)��Answer: 10.0

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Appendix

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Appendix : Primary Sources & Attribution for Material Used

Please maintain this slide with any modifications you make

<Add Your Logo and Attribution here>

Much of this interpretation is primarily the Intellectual Property of Jim Burnham, Top STEAM Clown, at STEAMClown.org
My best attempt to properly attribute, or reference any other sources or work I have used are listed below. This presentation and content is distributed under the Creative Commons License and the The programming code found in this presentation or linked to on my Github site is distributed under the GPL and EUPL:

Creative Commons License CC-BY-NC-SA 4.0
GNU General Public License v3.0
European Union Public Licence EUPL 1.2 or later

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Image Reference & Sources

https://starwars.fandom.com/wiki/Yoda

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What To Fix, Add, Or Change

Presentation Planning:

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