笨办法学Python）（二十四）

时间：2017-08-26 13:40:27 阅读：140 评论：0 收藏：0 [点我收藏+]

标签：let none tab pytho 基础 style ant cap can

习题 24: 更多练习

你离这本书第一部分的结尾已经不远了，你应该已经具备了足够的 Python 基础知识，可以继续学习一些编程的原理了，但你应该做更多的练习。这个练习的内容比较长，它的目的是锻炼你的毅力，下一个习题也差不多是这样的，好好完成它们，做到完全正确，记得仔细检查。

 1 print "Let‘s practice everything."
 2 print ‘You\‘d need to know \‘bout escapes with \\ that do \n newlines and \t tabs.‘
 3 
 4 poem = """
 5 \tThe lovely world
 6 with logic so firmly planted
 7 cannot discern \n the needs of love
 8 nor comprehend passion from intuition
 9 and requires an explanation
10 \n\t\twhere there is none.
11 """
12 
13 print "--------------"
14 print poem
15 print "--------------"
16 
17 
18 five = 10 - 2 + 3 - 6
19 print "This should be five: %s" % five
20 
21 def secret_formula(started):
22     jelly_beans = started * 500
23     jars = jelly_beans / 1000
24     crates = jars / 100
25     return jelly_beans, jars, crates
26 
27 
28 start_point = 10000
29 beans, jars, crates = secret_formula(start_point)
30 
31 print "With a starting point of: %d" % start_point
32 print "We‘d have %d beans, %d jars, and %d crates." % (beans, jars, crates)
33 
34 start_point = start_point / 10
35 
36 print "We can also do that this way:"
37 print "We‘d have %d beans, %d jars, and %d crates." % secret_formula(start_point)