Variables

Variables are ways to store data in a program and can be manipulated in many ways

Naming

Make variable names:

not too long
descriptive
without breaking syntax rules (dashes, spaces, colons, etc)
Types

Different data types can store different types of data. The types of data are
Integer: A whole number
String: A collection of characters
Boolean: Binary true or false
List: Can store many variables in one variable where you can access everything
Assigning

Data can be manipulated by assigning it to something else. You can also just change the data a little bit with different assigning operators.
=: Sets a variable to something else
+: Adds something
-=: Subtracts something
*= Multiplies something
/= Divides something
**= Does something to a power
Lists

Lists are a very easy way to store a lot of data USE THEM

Lists Activity

arr = ["green", "red", "pink", "purple", "blue", "brown"]
for el in arr:
    print(el)

Homework

# Database
arr = []
go = True
while(go):
    re = input("What do you want to do with the database?: ")
    if(re == "add"):
        arr.append(input("What do you want to add?: "))   
    if(re == "remove"):
        arr.remove(input("What do you want to remove?: "))   
    if(re == "change"):
        i = int(input("What element do you want to change? (number): "))
        arr[i] = input("What do you want to change it to?: ")
    if(re == "stop"):
        go = False
print(arr)

Variables

Naming

Types

Assigning

Lists

Lists Activity

Homework