"""Python variables"""

# you can store a value in a variable

message = "What's up, Doc?"
n = 17
pi = 3.14159

# you can print a variable

print message
print pi

# the variable has the same type as the value stored in it:

print type(message)
print type(n)
print type(pi)

# not all variable names are valid

76trombones = "big parade"
more$ = 1000000
class = "CS580"