Practical Coding in Python

#
# hello_math.py
#

# Importing the math module gives you access to mathematical
# constants and functions.

import math         

print("math.pi:", math.pi)
print("math.cos(math.pi):", math.cos(math.pi))

# You can import all the names (constants and functions) from a
# module for convenience.  In larger projects it is not generally
# recommended to do this due to the potential for name conflicts
# between functions in different modules.

from math import *

print("pi:", pi)
print("e:", e)

print("cos(0):", cos(0))
print("sin(0):", sin(0))
print("cos(pi):", cos(pi))
print("sin(pi):", sin(pi))

result = sin(pi)

if abs(result) < 1e6:
    print("Yay!")
else:
    print("Boo!")