exercises 1-5

• variables: stores a piece of data and gives it a specific name
  • my_variable = 10
    • my_variable (variable) now stores the number 10
• numbers are one data type used in programming
• another data type is called a boolean
  • like a light switch, it only has two values (True or False)
  • variables can store booleans (a = True)
• you can change the value of variables by reassigning it

exercises 5-10

• whitespace is used to structure code and must be properly formatted
• indentation error: expected an indented block
  • you'll get this error whenever your whitespace is off
• you should indent your code with four spaces (__why?__)
• interpreter: runs code line by line and checks for error
• comments: use a pound sign before the comment so that python will not try to run the comment as code
  • comments are good to add so you remember what you were doing and if you are collaborating
• for multi-line comments, use triple quotation marks
• math: you can add, subtract, divide, multiply
  • count_to = 8435 + 928374

exercises 10-13

• you can combine math with data types
• to use exponents:
  • eight = 2 ** 3
  • python squared means (python ** 2)
• modulo: returns the remainder from division
  • ex: 3 % 2 returns 1, because 2 goes into 3 evenly once with 1 left over