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Python Lesson 9
7
Transcript
Python Lesson 9
Functions
What are Functions?
What is a function?
How to cook rice
Steps to Cooking Rice
Recipe
1. Scoop rice into cooker
2. Add water to rinse the rice
3. Repeat rinsing rice until water is clear
4. Turn on rice cooker and enjoy
Functions are just like Recipes!
Why do we use Functions?
Why functions?
- Easy to reuse
- Efficient
- Less code needed
Creating Functions
4 things we need:
- keyword "def"
- Function name
- Parentheses ()
- Colon :
How do you create functions?
Let's try making a function!
Start off with def
def
Next, your Function Name
Name
Add Parentheses and Colon
():
Finally, add code
Code
You're Done!
What are function parameters?
Parameters
Parameters are values that we can input into the function so that the function can use them
How do we use Parameters?
Here's an example
Is it possible to use more than one parameter?
Discuss with a partner
Yes, it is possible!
Notice the comma
We can use numbers too!
Use return to Return Function Output
Thank You
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