更多练习ex24.py 2018-05-18

# -*- coding: utf-8 -*-
# @Author: yt
# @Date:   2018-05-15 14:04:46
# @Last Modified by:   yt
# @Last Modified time: 2018-05-18 16:44:49

print "Let's practice everything."

print "You\'d need to know \' bout escapes with \\ that do \n newlines and \t tabls."

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 = 10000

beans,jars,crates = secret_formula(start_point)

print "With a starting point of:%d"%start_point
print "We'd haver %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,and %d crates."%secret_formula(start_point)

运行结果： 图1

""在打印时，用于保留原符号打印，或是用于特殊转义字符