Week 1, Wednesday: python basics

• python vs unix shell
• types: int, str, float
  • possible values (ex: "A", "PONY", "hello, class!")
  • what you can do with them (ex: +, *??)
• operators: +,-,*,/,%,**
• variables, assignment
• using simple functions:
  • print()
  • raw_input()
  • int(), float(), str()
• return value plus assignment to variable
• first program: what year were you born?

Can you write a program that asks the user for the year they were born, and then calculates and displays their age?

 $ python howold.py
 Year you were born? 1965
 Sometime this year you will be 50 yrs old...

For now we will just do this in the interactive python shell. On Friday, once we know how to use the text editor, we will put our python code in a file and then run the file (like above).