CIS Undergrad Curriculum Wiki | CISC106 / Expressions

Python is interactive (show IDLE prompt)

Simple program: 3 + 2 Python computes: 5

built-in operators/functions: +, *, -, / pow, abs

pow(2,3)

for math functions need to do:

from math import *

sin(0)

cos(pi)

sqrt(9)

OR import math

math.sin(0)

math.cos(math.pi)

math.sqrt(9)

Combine and nest expressions:

sin(3 * pi / 2)

# sin(3pi/2) is an error

abs(sin(3 * pi / 2))

Expressions