Intro to Python

Intro to PythonIntro to Python
April 2018
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Password: Internet!23
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Instructor
TJ Stalcup
Lead Mentor @Thinkful (3yr)
SE Lead @540
Developer (22y)
Pokemon Master
TAs
Matthew Gifford
Instructional Designer
Mastering Web Dev
Voice of the Gods
npm start
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About you
What's your name?
What brought you here today?
What is your programming experience?
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About Thinkful
Thinkful helps people become developers and data scientists
through 1-on-1 mentorship and project-based learning
These workshops are built using this approach.
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Take advantage of our support
Don't get discouraged, struggle leads to mastery
Don't be shy, take full advantage of our support

Agenda
Learn key Python concepts (30 min)
Go over assignments (10 min)
Complete assignments with our support! (30 min)
Go over answer key (10 min)
Steps to continue learning (10 min)

How the web works
Type a URL from a client (e.g. google.com)
Browser sends an HTTP request asking for speci c les
Browser receives those les and renders them as a website

Client/Servers
Client (sends requests)
Frontend Developer
Manages what user sees
Server (sends response)
Backend Developer
Manages what app does
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Example: facebook.com
Client Server
Open browser
and navigate to
facebook.com
HTML, CSS, &
Javascript render
newsfeed
Request
Response
Algorithm
determines
content of feed.
(Python, PHP,
Java, .NET, Ruby,
etc)

Sends back
HTML, CSS,
Javascript les
Application Logic
Initial request
Following response
We'll be writing Python, the code that
the browser uses to run the app
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History of Python
Written in the late 1980s
Emphasis on code readability
Uses whitespace to structure code, instead of syntax
Has nothing to do with Monty Python, but.....

Why Python?
Easy to learn for beginners (Middle-High School)
General Language (Server-Side, Robotics, Data Science,
Automation, etc.)
High Demand - 12.7% of the job market (#2 Programming
Language)
Ssssssssssssss

Real developers use Google... a lot

De ning a variable
numberOfSheep = 20numberOfSheep = 20
Name of variable
Value of variable

Variable examples
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Repl.it
Register
My repls
Plus -> All Languages
Search Python, Select First

Declaring a function
def greeting():def greeting():
return"Hello world!" return"Hello world!"
Initialize function Name of function
What the function does
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Parameters within functions
def adder(a,b):def adder(a,b):
return a + b return a + b

adder(1,2)adder(1,2)
Parameters in declaration
Parameters used
within the function
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Examples of parameters within functions
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Repl.it setup & rst steps!
tf-python-challengeshttp://bit.ly/

if/else Statements
go to gas stationkeep driving
if false if true
need gas?
family roadtrip

Comparing Values
== (equal to)

5 == 5 --> true
5 == 6 --> false

!= (not equal to)

5 != 5 --> false
5 != 6 --> true

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if/else Statements
def familyRoadtrip():
if needGas == true:
getGas()
else:
keepDriving()
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if/else Statements
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Exercise Solutions
tf-python-challengeshttp://bit.ly/

Intro to Python

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