习题 24: 更多练习
在文本编辑器中，编辑以下内容并保存到ex24.py文件中，同时在终端中运行该文件：

print "Let's practice everything."
print 'You\'d need to know \'about 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\t\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 = 100000
beans, jars, crates = secret_formula(start_point)

print "With a starting point of : %d" % start_point
print "We'd have %d beans, %d jars, %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))

执行结果：

$ python ex24.py
Let's practice everything.
You'd need to know 'bout escapes with \ that do
 newlines and    tabs.
-------------------

    The lovely world
with logic so firmly planted
cannot discern
 the needs of love
nor comprehend passion from intuition
and requires an explanation

        where there is none.

-------------------
This should be five: 5
With a starting point of : 100000
We'd have 50000000 beans, 50000 jars, 500 crates.
We can also do that this way:
We'd have 5000000 beans, 5000 jars, 50 crates.