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Newton Girls Who Code

Tuesday Session 8, 12-11-2018

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Welcome!

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Plan for Today

Reviewing Functions
Spotlight: Women Who Code
Programming Concepts: Classes/ Objects
Break
Work on your Project!
Stand-up
Chill time

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Function review

What is a function?
What is the utility of a function?
What is the general structure of a function?
How do you call a function?

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What is a function?

# Let's define a function.�def function_name(argument_1, argument_2):� # Do whatever we want this function to do,� # using argument_1 and argument_2��# Use function_name to call the function.�function_name(value_1, value_2)

Functions are a set of actions that we group together, and give a name to.�Give the keyword def, which tells Python that you are about to define a function.

Give your function a name. A variable name tells you what kind of value the variable contains; a function name should tell you what the function does.
Give names for each value the function needs in order to do its work.

These are basically variable names, but they are only used in the function.
They can be different names than what you use in the rest of your program.
These are called the function's arguments.

Make sure the function definition line ends with a colon.
Inside the function, write whatever code you need to make the function do its work.

Using your function

To call your function, write its name followed by parentheses.
Inside the parentheses, give the values you want the function to work with.

These can be variables such as current_name and current_age, or they can be actual values such as 'eric' and 5.

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Reviewing Functions

Begin by opening: https://www.python.org/shell/

Beginner: Write out a function that prints “Hi, my name is Ann” when you call the function name(Ann)

Intermediate: Write out a function that sums two numbers, so when you call sum_num(3,4) you get 7

Challenge: Write a function to determine if a number is prime. Should print “True” if prime and “False” if not (ex, is_prime(5) should return True)

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Spotlight: Women Who Code

Arlene Garcia-Gunderson

Watch Video�

What struggles do Deaf students face in the classroom? How can technology help overcome them?

How is Veditz different from other tutoring or educational platforms?

What personal factors and experiences influenced Arlene to become an education technology entrepreneur?

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What is an Object?

Student

traits

- hair color

- age

Can do

- codes

- plays Violin

class Student

hairColor = ”black”
age = 15

�Methods or functions

- codes(language)

- playsViolin()

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How to use objects in Python

class Student:

def __init__(self, name, age): //self - reference to the class

self.name = name

self.age = age

def code(language):

print("I code in " + language)

student = Student("Mary", 15)

//call method

student.code(“python”); // ----will print: I code in python

print(student.name)

print(student.age)

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Python Syntax

Exercises:

https://www.w3schools.com/python/exercise.asp?filename=exercise_operators1

Resources:

https://www.tutorialspoint.com/python/python_basic_operators.htm�

Classes

https://www.w3schools.com/python/python_classes.asp

Interactive

https://www.learnpython.org/en/Classes_and_Objects

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Continue working on your projects!

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Plan for Today

Spotlight: Women Who Code
Programming Concepts: Classes/ Objects
Break
Work on your Project!
Coding Time
Stand-up
Chill time

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Stand-up

Start with your name, then choose from the following questions:

Suggest a specific skill in a language that you’d find useful to learn

Suggest something we could change to make sessions better

Let us know if you'd rather not have standups...

If you have an idea for next week’s lightning standup,

e-mail instructors@newtongwc.org and let us know

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See you next week!