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！
1 #-- coding: utf - 8 -- 2 print "Mary had a little lamb." 3 print "Its fleece was white as %s." % 'snow' 4 print "And everywhere that Mary went." 5 print "." * 10 # what'd that do? 6 7 end1 = "C" 8 end2 = "h" 9 end3 = "e" 10 end4 = "e" 11 end5 = "s" 12 end6 = "e" 13 end7 = "B" 14 end8 = "u" 15 end9 = "r" 16 end10 = "g" 17 end11 = "e" 18 end12 = "r" 19 20 # watch that comma at the end. try removing it to see what happens 21 22 print end1 + end2 + end3 + end4 + end5 + end6, 23 print end7 + end8 + end9 + end10 + end11 + end12