习题 7: 更多打印

现在我们将做一批练习，在练习的过程中你需要键入代码，并且让它们运行起来。我不会解释太多，因为这节的内容都是以前熟悉过的。这节练习的目的是巩固你学到的东西。我们几个练习后再见。不要跳过这些习题。不要复制粘贴！

print "Mary had a little lamb."
print "Its fleece was white as %s." % 'snow'
print "And everywhere that Mary went."
print "." * 10  # what'd that do?

end1 = "C"
end2 = "h"
end3 = "e"
end4 = "e"
end5 = "s"
end6 = "e"
end7 = "B"
end8 = "u"
end9 = "r"
end10 = "g"
end11 = "e"
end12 = "r"

# watch that comma at the end.  try removing it to see what happens
print end1 + end2 + end3 + end4 + end5 + end6,
print end7 + end8 + end9 + end10 + end11 + end12

你应该看到的结果

$ python ex7.py
Mary had a little lamb.
Its fleece was white as snow.
And everywhere that Mary went.
..........
Cheese Burger
$

加分习题

接下来几节的加分习题是一样的。

1. 逆向阅读，在每一行的上面加一行注解。
2. 倒着朗读出来，找出自己的错误。
3. 从现在开始，把你的错误记录下来，写在一张纸上。
4. 在开始下一节习题时，阅读一遍你记录下来的错误，并且尽量避免在下个练习中再犯同样的错误。
5. 记住，每个人都会犯错误。程序员和魔术师一样，他们希望大家认为他们从不犯错，不过这只是表象而已，他们每时每刻都在犯错。