Python--函数内部变量都是临时的，当函数返回以后，返回值可以赋予一个变量。

#coding=utf-8
print "Let‘s practice everything."
print ‘ You\‘d need to know\‘bout escapes with \\ that do \n newlines and \t tabs.‘

poem = """
\tThe lovely world
with logic so firmly planted
cannot discern \n the needs of love
nor comprehend passion from intuition
and requires an explanation
\n\twhere there is none.
"""

print "----------------"
print poem
print "----------------"

five = 10 - 2 + 3 - 6
print "This should be five: %s" % five

def secret_formula(started):
 jelly_beans = started * 500
 jars = jelly_beans / 1000
 crates = jars / 100
 return jelly_beans, jars, crates
 
 
start_point = 10000
beans, jars, crates = secret_formula(start_point) #函数内部的变量都是临时的，当你的函数返回以后，返回值可以被赋予一个变量----》即可以创建一个新变量来存放函数的返回值。

print "With a starting point of: %d" % start_point
print "We‘d have %d beans, %d jars, and %d crates." % (beans, jars, crates)

start_point = start_point / 10

print "We can also do that this way:"
print "We‘d have %d beans, %d jars, %d crates." % secret_formula(start_point)