Repeating my advice from the previous chapter, whenever you learn a new feature, you should try it out in interactive mode and make errors on purpose to see what goes wrong.
- We’ve seen that
n = 42is legal. What about
42 = n?
- How about
x = y = 1?
- In some languages every statement ends with a semi-colon,
;. What happens if you put a semi-colon at the end of a Python statement?
- What if you put a period at the end of a statement?
- In math notation you can multiply
x y. What happens if you try that in Python?
Practice using the Python interpreter as a calculator:
- The volume of a sphere with radius \(r\) is \( 4/3 \pi r^3 \). What is the volume of a sphere with radius 5?
- Suppose the cover price of a book is $24.95, but bookstores get a 40% discount. Shipping costs $3 for the first copy and 75 cents for each additional copy. What is the total wholesale cost for 60 copies?
- If I leave my house at 6:52 am and run 1 mile at an easy pace (8:15 per mile), then 3 miles at tempo (7:12 per mile) and 1 mile at easy pace again, what time do I get home for breakfast?